Question

Let f(x) = -3x - 4 and g(x) = 2x - 6. find ( F*g) (-7)
A. 28
B. -20
C. 17
D. 56

Answer 1

@agent0smith

Answer 2

Plug -7 into f(x)

Plug -7 into g(x)

Multiply those two results

Answer 3

but i dot get it ugh every time i do it it comes out completely wrong

Answer 4

Show your work

Answer 5

well i think im setting the whole problem up wrong i dont know how to set it up

Answer 6

f (-7) = -3x -4 amd g (-7) = 2x -6?

Answer 7

You didn't plug in the -7 for x...

Answer 8

\[ f(x) = -3x - 4\\
f(-7) = -3\times (-7) - 4\]

Answer 9

-7 in g(x) then that value in f(x) so 56