QuestionGraph the equation to find how long it takes to empty the pool.
Studdy Solution
STEP 1
Assumptions1. The equation given is . represents the amount of water in the pool3. represents time in hours4. The slope of -3 represents the rate at which the pool is being emptied (3 units per hour)
5. The pool is completely empty when
STEP 2
First, we need to rewrite the equation in slope-intercept form (), where is the slope and is the y-intercept.
STEP 3
istribute the -3 to both terms inside the parentheses.
STEP 4
Add32 to both sides of the equation to isolate .
STEP 5
implify the equation.
STEP 6
Now that we have the equation in slope-intercept form, we can graph the function. The y-intercept is47 and the slope is -3, which means for every hour that passes, the amount of water in the pool decreases by3 units.
STEP 7
To find out how long it will take to completely empty the pool, we need to find the x-intercept of the graph. The x-intercept is the value of when .
STEP 8
Add to both sides of the equation to isolate .
STEP 9
Divide both sides of the equation by3 to solve for .
STEP 10
Calculate the value of .
It will take approximately15.67 hours to completely empty the pool.
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