Question

Can you check my work?

f(x) = 3x and g(x) = x^2 - 5
what is (g * f)(-2)?

(x^2 - 5)(3x)(-2)

(3x^3 - 15x)(-2)

-6x^3 + 30x

is this right?

Answer 1

Nope.

Answer 2

why not??

Answer 3

Redo it.

Answer 4

I did I don't know what I'm doing wrong?

Answer 5

I got the same answer ..

Answer 6

No no, you can't multiply f and g and -2 together.

Answer 7

..why not?

Answer 8

Why not? because functions aren't evaluated that way.