Given the function c(x)= 2 square root of x-1, what is the average rate of change over the interval 3 is less than or equal to x is less than or equal to 15?
A) 3
B) 4
C) 1/3
D) 12
![Given the function cx 2 square root of x1 what is the average rate of change over the interval 3 is less than or equal to x is less than or equal to 15 A 3 B 4 class=](https://us-static.z-dn.net/files/d8e/ceb812fcc9e8fe4fe12ecd803cf747fc.png)