I am having a problem with solving a composite function in Algebra 1

Question

How do I solve f(x) = -2x + 1 and g(x) = 4x? Don't I need more info?

No, that is all you need.

I it unclear what you want to do here.

see http://library.thinkquest.org/C0110248/algebra/functions_c.htm

Answer 1

(F°f)(x)=-2(-2x+1)+1
=4x-2+1
=4x-1

G(x)=4x
X=-4

F(x)=g(x)

4x-1=-4
4x=-4+1
4x=-3
X=-3/4
X=-0,75

Answer 2

or x and y intercepts