Answer:
To find the change in x over the given interval, subtract the initial value of x from the final value of x.
Initial value of x = 2
Final value of x = 7.5
Change in x = Final value of x - Initial value of x
Change in x = 7.5 - 2
Change in x = 5.5
Therefore, over the interval from x = 2 to x = 7.5, x changes by 5.5.
