Question

Let f(x) = 3 x + 2 and g(x) = 4 x^2 + 2 x.
(f \circ g)(5 ) =

Please help! I can't solve this!

Answer 1

what's \circ?

Answer 2

composition.

Answer 3

First find \(g(5)\).

Answer 4

\[
g(5) = 4(5)^2+2(5)
\]

Answer 5

That will give you some number, plug that number into \(f(x)\).

Answer 6

btw in order for latex code to show up in here you have to surround it with \[ \text{\[ Latex code goes in here \]} \]
So your (f \circ g)(5) goes to:
\[ \text{\[ (f \circ g)(5) \]} \implies (f\circ g)(5) \]

Answer 7

Thank you!!!