8 to the power of 2x=4 solve for x

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

Can someone me i’m confused. will give brainliest and a whole bunch of points

Need solving this 2nd limit problem.