Which of the following functions has a rate of change that stays the same?

I believe C If not then b is my back up answer

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

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?