Find C.

If $800 is invested in an account that pays 4% compounded annually, the total amount, A(t), in the account after tyears is A(t)=800(1.04)t a. Find the average rate of change per year of the total amount in the account for the first five years of the imvestment (from t=0 to t=5 ). b. Find the average rate of change per year of the total amount in the account for the second five years of the investment (from t=5 to t=10 ). c. Estimate the instantaneous rate of change for t=5. a. Which of the following is the correct formula for finding the average rate of change from t=a to t=b ? A. 5A(5)A(0) B. 5A(5)A(0) C. 5A(0)A(5) D. A(0)A(5) The average rate of change per year of the total amount in the account for the first five years of the investment (from t=0 to t=5 ) is s per year. (Round to the nearest cent as needed.) b. The average rate of change per year of the total amount in the account for the second five years of the investment (from t=5 to t=10 ) is f (Round to the nearest cent as needed.) c. The instantaneous rate of change for t=5 is about $ per year. (Do not round until the final answer. Then round to the nearest cent as needed.)