What is the average rate of change of the function f(x)=5(2)^x from x=1 to x=5

Uanita borrowed $600 to purchase a new computer. she was charged 7% interest for two years. she used the simple interest formula to find the interest. i = 600(7)(2) what error did juanita make and how will her error affect the interest she calculates? explain.

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

The value √10 and √15 are plotted on the number line