Studdy AI Logo
Math  /  Algebra

QuestionGiven f(x)=3x+9f(x)=3 x+9 a) Evaluate f(5)f(5) f(5)=f(5)= □\square b) Evaluate f(−4)f(-4) f(−4)=f(-4)= □\square Question Help: □\square Message instructor

Studdy Solution

STEP 1

1. We are given the function f(x)=3x+9 f(x) = 3x + 9 .
2. We need to evaluate the function at specific values of x x .

STEP 2

1. Evaluate f(5) f(5) .
2. Evaluate f(−4) f(-4) .

STEP 3

Substitute x=5 x = 5 into the function f(x) f(x) :
f(5)=3(5)+9 f(5) = 3(5) + 9

STEP 4

Simplify the expression:
f(5)=15+9 f(5) = 15 + 9 f(5)=24 f(5) = 24
The value of f(5) f(5) is:
24 \boxed{24}

STEP 5

Substitute x=−4 x = -4 into the function f(x) f(x) :
f(−4)=3(−4)+9 f(-4) = 3(-4) + 9

STEP 6

Simplify the expression:
f(−4)=−12+9 f(-4) = -12 + 9 f(−4)=−3 f(-4) = -3
The value of f(−4) f(-4) is:
−3 \boxed{-3}

Was this helpful?

Studdy solves anything!

banner

Start learning now

Download Studdy AI Tutor now. Learn with ease and get all help you need to be successful at school.

ParentsInfluencer programContactPolicyTerms
TwitterInstagramFacebookTikTokDiscord