E 5-13 Solving for unknowns: annuities LO5-9 For each of the following situations involving annuities, solve for the unknown (7). Assume that interestis compounded annually and that all annuity amounts are received at the end of each period. (= interest rate, and n = number of years) Present Value 1 7 Annuity Amount $ 3.000 75,000 20,000 80,518 7 1 2. 3. 4 5. 4 7 $242.980 161.214 500,000 250,000 7 10 8 4