Please help with c and d using chart. Practicing for AP exam.

(c) i The depth of water in tank B, in inches, is modeled by the function g(t) = 3.2 + 17.5,/ sin (0. 16:) for 0 S t S 10, where t is measured in minutes. Find the average depth of the water in tank B over the interval 0 S t S 10. Is this value greater than or less than the average depth of the water in tank A over the interval 0 S t S 10 '2 Give a reason for your answer. (d) According to the model given in part (c), is the depth of the water in tank 3 increasing or decreasing at time t = 6 ? Give a reason for your