Question

Evaluate the function for the given value of x.

f(x) = -6x2 - 4x - 4 , x = - 2

A. f( - 2) = -36

B. f( - 2) = -17

C. f( - 2) = -20

D. f( - 2) = -28


I am really stuck on this question and my teacher isn't online too help me.

Obviously it isn't D and I don't think it's A I need help!?

Answer 1

Plug your value in for x

Answer 2

@kelseymariah

Answer 3

it will be -20 when the x value is negative 2

Answer 4

Hmm give me a sec

Answer 5

That's not what I'm getting

Answer 6

oh wait

Answer 7

you're subtracting a negative by a negative so it will be -16 plus -4 which is -20 :)

Answer 8

It's -20, yes.
Would you like a step by step?

Answer 9

Yes please

Answer 10

I got -20 but I always like to check

Answer 11

After you plug in your values, you get +6x^2-4x-4 = -6x(-2)^2- -2*4-4

Answer 12

-6x^2**

Answer 13

Evaluate (-2)^2 = 4 ; +6*4- -2*4-4

Answer 14

-6*4 = -24- -2*4-4

Answer 15

-24+8-4

Answer 16

8-(24+4) = 8-28 = -20

Answer 17

Thank you!

Answer 18

yep!