Question

f(x)=3x and g(x)=-2x-6 find (fog)(4)

Answer 1

Do you know how to find \( f \circ g \) first?

Answer 2

no i dont really even know what that means tbh

Answer 3

F(x)=3x
G(x)=-2x-6
So
(F°g) will be
3(-2x-6)
-6x-18
So find for x=4
-6(4)-18
-24-18=??

Answer 4

thank you so much

Answer 5

The notation \( f \circ g\) represents functional composition, meaning you take the output of \(g\) and use that as the input of \(f\). So

\[ f \circ g(x) = f(g(x)) = 3(-2x-6) = -6x-18\]

Answer 6

Then once you have that, you simply plug in 4.

Answer 7

thank you