When the function f(x) = 4(2)x is changed to f(x) = 4(2)x − 13, what is the effect? (5 points)

a
There is no change to the graph because the exponential portion of the function remains the same.

b
The x-intercept is 13 spaces higher.

c
The y-intercept is 13 spaces lower.

d
All input values are moved 13 spaces to the left.