Question

Given that f(x) = 2x + 1 and g(x) = −5x + 2, solve for f(g(x)) when x = 3.

Answer 1

what is \(g(3)\) ?

Answer 2

if it is not clear let me know

Answer 3

Yes, I am confused..I'm not very good at this and was hoping I could get a walk through :)

Answer 4

to find \(g(3)\) where you see an \(x\) in \(g(x)=-5x+2\) you replace it by 3 and compute
i.e.
\[g(3)=-5\times 3+2\]

Answer 5

clearer?

Answer 6

Yes it is! You think you could help me go through the rest though?

Answer 7

sure
now that we have \(g(3)=-13\) then
\[f(g(3))=f(-13)=2\times -13+2\]

Answer 8

Wait how did you get that -13?