Write and solve a number sentence to find the difference between the speed of the planet venus and saturn then write the difference using number names

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

Ineed in figuring out this problem.

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15