Answer please e

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

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

Someone answer this check out the image!