What 2+2 answer it please

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

I’m confused on how to work the pie charts

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer