The ticket cost for Riverdance is \$40 each. (a) Define cost function C(x) for x tickets.
(b) Write total cost T(a) with 3.5% tax and \6fee.(c)Evaluate(T \circ C)(x).(d)Find(T \circ C)(4)$ and explain its meaning.
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10.
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Practice similar Use a change of variables to evaluate the definite integral ∫01(2x1−x2)dx. Leave your final answer as a fraction.
∫01(2x1−x2)dx=□
This table lists the the yearly profit P (adjusted for inflation) of a certain restaurant, x years after 1970. P is measured thousands of dollars.
\begin{tabular}{|c|c|c|c|c|c|c|c|}
\hlinex (yrs after 1970) & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\
\hlineP(1,000 's of $) & 100 & 110 & 100 & 90 & 80 & 105 & 107 \\
\hline
\end{tabular} In what year(s) was the profit $100000 ?
11. Let a function y=f(x) be given by the equation y3+y=2x2, and also note that the points (−1,1), (0,0) and (1,1) lie on its graph. Complete the following table:
\begin{tabular}{l|ccc}
x & -1 & 0 & 1 \\
\hlinef′′(x) & A & B & C
\end{tabular}
(a) A=−1,B=0,C=−1
(b) A=−1,B=2,C=−1
(c) A=−1,B=4,C=−1
(d) A=−21,B=4,C=−21
(e) A=0,B=1,C=0
Name: Date: ACMAT161: Calculus I
Day 25 Problem Set A: Practice from Section 5.2: Definite Integrals and 5.3: The Fundamental Theorem of Calculus
1) Create a Riemann sum to estimate the value of ∫02(x2−3)dx
a. Sketch a graph of the integrand on the interval of integration
b. Calculate Δx and the grid points for n==Ab−a=Δ2−0=Δxx=(21)⎩⎨⎧x1=(21)2−3=−411x2=12−3=−2x3=(23)2−3=−3x4=x2−3=1
c. Calculate a Right Riemann sum
2) Evaluate the following integral using the Fundamental Theorem of Calculus. Discuss whether your result makes sense given the graph of the area.
−3x3−x2+5x∫01(x2−2x+5)dx=313−12+5(1)=313=303−D2+5(0)=0313−0=313
3) Find the area of the region bounded by the graph of f(x)=sinx and the x-axis on the interval [−43π,32π].
The velocity function, in feet per second, is given for a particle moving along a straight line
v(t)=t2−t−90,1≤t≤11
(a) Find the displacement (in feet).
□ ft
(b) Find the total distance (in feet) that the particle travels over the given interval.
Translate each graph as specified below.
(a) The graph of y=x2 is shown. Translate it to get the graph of y=(x+5)2.
(b) The graph of y=x2 is shown. Translate it to get the graph of y=x2−4. Part (b)
Use the Midpoint Rule with n=4 to approximate the value of the definite integral. Use a graphing utility to verify your result. (Round your answer to three decimal places.)
∫35x18dx
Consider the graph shown.
a. Select the best possible wording for the situation depicted in the given graph:
Ida sells 5 boxes of cookies to family members, and for every door she knocks on in her neighborhood, she sells another 1 boxes of cookies.
Ida sells 6 boxes of cookies for every door in her neighborhood that she knocks on.
Ida's own family bought 1 boxes of cookies, and for every door in her neighborhood Ida knocks on to sell cookies, she sells 5 additional boxes of cookies.
Ida sold \1ofcookiestofamilymembers,andforeverydoorinherneighborhoodsheknockson,shemakesanother$5sellingcookies.b.Howdoweknow,basedonthegivengraph,thattherelationbetweenthenumberofdoorsIdaknockson,andthenumberofboxesofcookiesshesells,isalinearfunction?Becausethegraphisastraightline(orcontainspointsthatarearrangedinastraightline)andpassestheverticallinetest.It′simpossibletotellfromlookingatthegraphthatitrepresentsalinearfunction.Becauseonthegraph,they-values increase from left to right.
Because the graph has units labeled on both axes.
c. Fill in the given table with the correct missing values.
\begin{tabular}{|c|c|}
\hlinex (number of doors Ida knocks on) & y (total number fo boxes of cookies Ida sells) \\
\hline 0 & \square \\
\hline 1 & \square \\
\hline 5 & \\
\hline\square \\
\hline
\end{tabular}
d. Write the linear function relating the number of doors Ida knocks on, x,tothetotalnumberofboxesofcookiesshesells,y . y=\square$
PREVIOUS ANS The graph of the second derivative f " of a function f is shown. State the x-coordinates of the inflection points of f.
□x=8 (smaller value)
x=3 (larger value)
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Assignment 4: Problem 11
(1 point) Find T5(x), the degree 5 Taylor polynomial of the function f(x)=cos(x) at a=0.
T5(x)=□
Find all values of x for which this approximation is within 0.004794 of the right answer. Assume for simplicity that we limit ourselves to ∣x∣≤1.
∣x∣≤□□ Note: You can earn partial credit on this problem.
Find the Taylor polynomial of degree 3 for the function f(x)=x−4x+7 about x=5.
T3(x)=□+□(x−5)+□(x−5)2+□(x−5)3 Note: You can earn partial credit on this problem.
Over the past several years, the owner of a boutique on Aspen Avenue has observed a pattern in the amount of revenue for the store. The revenue reaches a maximum of about $56000 in January and a minimum of about $25000 in July. Suppose the months are numbered 1 through 12 , and write a function of the form f(x)=Asin(B[x−C])+D that models the boutique's revenue during the year, where x corresponds to the month.
f(x)=□
Determine the interval(s) on which the function is (strictly) increasing.
Write your answer as an interval or list of intervals.
When writing a list of intervals, make sure to separate each interval with a comma and to use as few intervals as possible.
Click on "None" if applicable.
Use the vertex and intercepts to sketch the graph of the quadratic function. Give the equation of the parabola's axis of symmetry. Use the graph to determine the function's domain and range.
f(x)=x2−2x−8
Consider the function f(x)=3x2−24x−8.
a. Determine, without graphing, whether the function has a minimum value or a maximum value.
b. Find the minimum or maximum value and determine where it occurs.
c. Identify the function's domain and its range.
Question 5 of 10 Write an equation in vertex form of the parabola that has the same shape as the graph of f(x)=8x2 or g(x)=−8x2, but with the given maximum or minimum.
Maximum =7 at x=−5
Consider the function f(x)=x2/5(x−5). This function has two critical numbers A<B Then A=□ and B□ . For each of the following intervals, tell whether f(x) is increasing or decreasing.
(−∞,A]:?[A,B]:?[B,∞)?∨? The critical number A is ? □ and the critical number B is □ ?
□ There are two numbers C<D where either f′′(x)=0 or f′′(x) is undefined. Then C=□ and D=□
Finally for each of the following intervals, tell whether f(x) is concave up or concave down. (−∞,C) : ?
(C,D) ? □(D,∞)?□
Erik has 40 yards of fencing to enclose a rectangular area. Find the dimensions of the rectangle that maximize the enclosed area. What is the maximum area?
Determine whether the statement makes sense or does not make sense, and explain the reasoning.
The student must have made an error when graphing a parabola because its axis of symmetry is the y-axis.
The growth of the number of bacteria in a certain population is modeled by a function that increases exponentially over time: Which of the following could describe how the number of bacteria in the population changes each hour?
(A) Each hour, the number of bacteria in the population is 16% greater than it was the previous hour.
(B) Each hour, the number of bacteria in the population is 1,600 greater than was the previous hour.
(C) Each hour, the number of bacteria in the population is 1,600 less than it was the previous hour.
(D) Each hour, the number of bacteria in the population is 16% less than it was the previous hour.
The figure shows that when a football is kicked, the nearest defensive player is 6 feet from the point of impact with the kicker's foot. The height of the punted football, y, in feet, can be modeled by the following equation.
y=−0.01x2+1.18x+2 Determine whether the following statement makes sense or does not make sense, and explain your reasoning.
The given figure shows that a linear model provides a better description of the football's path than a quadratic model.
Jetermine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. The graph of f(x)=−3(x+3)2−6 has one y-intercept and two x-intercepts.
Determine the interval(s). on which the function is constant.
Write your answer as an interval or list of intervals.
When writing a list of intervals, make sure to separate each interval with a comma and to use as few intervals as possible.
Click on "None" if applicable.
□□□□∞
None
39. Let p(x)=ax3+bx2+cx+60. When p(x) is divided by x−1, the remainder is 30 . When p(x) is divided by (x−3)(x+7), the quotient is x−3.
(a) Find the remainder when p(x) is divided by (x−3)(x+7). Explain (b) How many real roots does the equation p(x)=0 have? Explain your answer. ⇒ Example 14
39. Let p(x)=ax3+bx2+cx+60. When p(x) is divided by x−1, the remainder is 30 . When p(x) is divided by (x−3)(x+7), the quotient is x−3.
(a) Find the remainder when p(x) is divided by (x−3)(x+7).
xplain (b) How many real roots does the equation p(x)=0 have? Explain your answer. ⇒ Example 14
The number of bacteria N, in a culture is modeled by the exponential growth model, N(t)=300e0.025t, where t represents time in hours. The growth rate of the population of this bacterium is represented by 2.5% per hour.
True
False
Find the sine, cosine, and tangent of ∠K. Simplify your answers and write them as proper fractions, improper fractions, or whole numbers.
sin(K)=cos(K)=tan(K)=□□□
Determine the exponential rate of increase for the function defined by this table of
\begin{tabular}{c|l|}
\hlinex & y \\
\hline 0 & 4 \\
\hline 1 & 12 \\
\hline 2 & 36 \\
\hline 3 & 108 \\
\hline 4 & 324 \\
\hline
\end{tabular}
Question
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Show Examples The derivative of the twice-differentiable function f is shown below on the domain (−9,9). The graph of f′ has points of inflection at x=−3,x=1, indicated by small green circles. What inferences can be made about the graphs of f,f′, and f′′ on the interval (−3,0) ? Choose the best answer for each dropdown. Answer Attempt 2 out of 2
From the figure given above, it can be seen that the graph of f′ on the interval (−3,0) is positive increasing
□ , and concave dow
□
Based on these observations, it can be concluded that:
On the interval (−3,0), the graph of f would be increasing and concave dow ∨ because f′ is positive and increasing
On the interval (−3,0), the graph of f′′ would be positive only because f′ is increasing
Find the slope of the line passing through the pair of points or state that the slope is undefined. Then indicate whether the line through the points rises, falls, is horizontal, or is vertical.
(−1,1) and (5,6) Select the correct choice below and, if necessary, fill in the answer box within your choice.
A. The slope is □ (Simplify your answer.)
B. The slope is undefined. Indicate whether the line through the points rises, falls, is horizontal, or is vertical.
A. The line is vertical.
B. The line falls from left to right.
C. The line is horizontal.
D. The line rises from left to right.
Let z(x)=tan(x). Which of the following best describes its fundamental algebraic structure?
composition: A composition f(g(x)) of basic functions
sum. A sum f(x)+g(x) of basic functions
product. A product f(x)⋅g(x) of basic functions
quotient. A quotient f(x)/g(x) of basic functions
where
f(x)=□g(x)=□
In the following exercise, find the coordinates of the vertex for the parabola defined by the given quadratic function.
f(x)=2(x−4)2+3 The vertex is □ (Type an ordered pair.)
Use the vertex and intercepts to sketch the graph of the quadratic function. Give the equation for the parabola's axis of symmetry. Use the parabola to identify the function's domain and range.
f(x)=(x−2)2+4 Use the graphing tool to graph the equation. Use the vertex and the y-intercept when drawing the graph. The axis of symmetry is □
(Simplify your answer. Type an equation.)
Identify the function's domain.
The domain is □
(Type the answer in interval notation.)
Identify the function's range.
The range is □
(Type the answer in interval notation.)
Use the vertex and intercepts to sketch the graph of the quadratic function. Give the equation of the parabola's axis graph to determine the domain and range of the function.
f(x)=4x−x2+12 Use the graphing tool to graph the equation. Use the vertex and one of the intercepts to draw the graph. The axis of symmetry is □
(Type an equation.)
The domain of the function is □
(Type your answer in interval notation.)
The range of the function is □ .
(Type your answer in interval notation.)
D. negotiate for a higher than market wage hike every year through collective bargaining.
b. Suppose that the objective of a union is to maximize the total dues paid to the union by its membership. If union dues are paid as a flat amount per union member employed, the union's strate will be to
A. negotiate for the wage level that is consistent with perfectly elastic demand for labor.
B. negotiate for the maximum wage rate the employer is willing to pay for the number of workers belonging to the union.
C. negotiate for the wage level that is consistent with unit elastic demand for labor.
D. negotiate for limiting the entry of new workers over time.
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Draw a line that has the indicated slope and y-intercept.
slope =23 and y-intercept (0,−5) Use the graphing tool on the right to draw the line. Click to enlarge graph
A new television show debuts amid great fanfare, and attracts 14 million viewers for the first episode. The number of viewers for subsequent episodes is shown in the table.
\begin{tabular}{|c|c|}
\hline Episode \# & \begin{tabular}{c}
Viewers \\
(millions)
\end{tabular} \\
\hline 1 & 13.9 \\
\hline 2 & 11.1 \\
\hline 3 & 8.8 \\
\hline 4 & 8 \\
\hline 5 & 7.2 \\
\hline 6 & 8.1 \\
\hline 7 & 8.1 \\
\hline 8 & 7.8 \\
\hline 9 & 7.7 \\
\hline
\end{tabular} Use a graphing calculator to find a line of best fit for the data. Round to four decimal places. Rounding to four decimal places, the line of best fit for the data is y=□x+□ .
Suppose y=3sin(4(t+13))−6. In your answers, enter pi for π.
(a) The midline of the graph is the line with equation y=−6 help (equations)
(b) The amplitude of the graph is 3 help (numbers)
(c) The period of the graph is π help (numbers) Note: You can earn partial credit on this problem.
Choose the end behavior of the graph of each polynomial function.
\begin{tabular}{|l|l|}
\hline (a) f(x)=4x5−4x4+4x3−3x & Falls to the left and rises to the right \\
Rises to the left and falls to the right \\
Rises to the left and rises to the right \\
(b) f(x)=5x4−3x3−2x2−6 & Falls to the left and falls to the right and rises to the right \\
Rises to the left and falls to the right \\
(c) f(x)=−4(x−3)2(x+2)2 & Falls to the left and falls to the right and rises to the right \\
Rises to the left and falls to the right \\
Rises to the left and rises to the right rises to the right \\
Falls to the left and falls to the right \\
\hline
\end{tabular}
3.12 An investment firm offers its customers municipal bonds that mature after varying numbers of years. Given that the cumulative distribution function of T, the number of years to maturity for a randomly selected bond, is
F(t)=⎩⎨⎧0,41,21,43,1,t<1,1≤t<3,3≤t<5,5≤t<7,t≥7,
find
(a) P(T=5);
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11.
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DETAILS
MY NOTES
SCALCET9M 4.4.015. Find the limit. Use l'Hospital's Rule where appropriate. If there is a more elementary method, consider using it.
t→0limsin(t)e8t−1□
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Submit Answer 12. [-/1 Points]
DETAILS
15.
[-/1 Points]
DETAILS
MY NOTES
SCALCET9M 4.4.031. Find the limit. Use I'Hospital's Rule where appropriate. If there is a more elementary method, consider using it.
x→0lim2xsin−1(x)□
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18. [-/1 Points] DETAILS
MY NOTES SCALCET9M 4.4.058.
ASK YOL Find the limit. Use I'Hospital's Rule where appropriate. If there is a more elementary method, consider using it.
x→0+lim(tan(8x))x□
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Q.12 A long term investment of $500,000 has been made by a small company. If all interest is reinvested at the same rate of interest. Required:
a) What will the future value of the investment be after 10 years? The interest rate is 9% per year compounded quarterly.
b) What will the profit value of the investment be after 10 years? The interest rate is 9% per year compounded quarterly.
c) What will future value and net profit of the investment be after 18ret quarters? The interest rate is 12% per year compounded quarterly.
d) What will future value and net profit of the investment be after 7th semi-annual, if the investment rate be 8% per year compounded semi-annually?
e) What will future value and net profit of the investment be after 42nd months, if the investment rate be 9% per year compounded monthly?
Ise single-payment formula to compute desire results.
11. Geben Sie die in kartesischer Binomialform gegebenen Punkte in Polarform an A(−6/−8),B=[8;120∘],C(−5/3),D(5/0),E=[12;4,2rad],F=[5;π/2] 12. Skizzieren Sie am Einheitskreis die folgenden Funktionswerte.
a. sin(250∘)
b. cos(40∘)
c. sin(π/3rad )
d. cos(5rad )
e. sin(−70∘)