Please help me this is one step equations.

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14