To go on a summer trip, Deshaun borrows 800 . He makes no payments until the end of 4 years, when he pays off the entire loan. The lender charges simple interest at an annual rate of 5% . Answer the following questions. If necessary, refer to the list of financial formulas. (a) How much total interest will Deshaun have to pay? (b) What will the total repayment amount be [including interest)? Alan has decided to invest to help with his retirement savings. How much would he have 117,000 to invest to have after 20 years, assuming an interest rate of 3.47% compounded daily? Do not round any intermediate computations, and round your final answer to the nearest dollar. If necessary, refer to the list of financial formulas. Assume there are 365 days in each year. The Andersons are saving up to go on a family vacation in 5 years. They invest 2700 into an account with an annual interest rate of 1.39% compounded annually. Answer the questions below. Do not round any intermediate computations, and round your final answers to the nearest cent. If necessary, refer to the list of financial formulas. (a) Assuming no withdrawals are made, how much money is in the Andersons' account after years? (b) How much interest is earned on the Andersons1 investment after years