# Given the function f(x)=-9x²-3, which of the following best represents the value of f(-2)?F. 78G.

10 answers

###### Question:

Given the function f(x)=-9x²-3, which of the following best represents the value of f(-2)? F. 78

G. 321

H. 33

J. 39

G. 321

H. 33

J. 39

## Answers

1

Explanation:

f(x) = (x + 1)²

f(-2) is found by replacing "x" with "-2"

f(-2) = (-2 + 1)²

= (-1)²

= 1

22

Step-by-step explanation:

f(x) = 2x² - 3x + 8

f(-2) = 2(-2)² - 3(-2) + 8

= 2(4) + 6 + 8

= 8 + 6 + 8

= 22

Variant C

Step-by-step explanation:

f(x) = 3x^2 − 4

For finding f(-2) just replace x with - 2 like this:

f(-2)=3*((-2))^2-4=3*4-4=12-4=8

All this is asking you to do is plug in -2 for x

So

f(x)=3x²-4

f(-2)=3(-2²)-4

f(-2)=12-4

f(-2)=8

the answer is D (22)

Step-by-step explanation:

F(x)= (x+1)^2

f(-2)= ((-2)+1)^2

= (-1)^2

= 1

Go to quizlet I hope that will help they helped me

I think the answer would be a

^^ correct! It would be 8! Your answer is C.

78

Step-by-step explanation:

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