2. If $2000 is invested in an account that pays 7% compounded annually, find the total amount A(t), after t years, is A(t)= 3000(1.07)'. a. Find the average rate of change per year of the total amount in the account for the first 4 years of the investment (from t = 0 tot = 4). b. Find the average rate of change per year of the total amount in the account for the second 4 years of the investment. (From t = 4 to t = 8) C. Find the instantaneous rate of change for t=4