Please explain in a hand written formula (Not Excel)

TIME VALUE OF MONEY Directions: As a group, use a financial function calculator, a spreadsheet program with time value-of-money functions, or financial function calculators on the Internet to solve the following problems. 1. Diane invests $500 today in an account earning 7%. How much will it be worth in 5 years? 10 years? 20 years? Same facts as #1, except Diane finds an account earning 10%. How much will it be worth in 5 years? 10 years? 20 years? 2. 3. Elaine needs to save up $4,000 in 4 years. If she can set aside $1,000 today, what rate of return does she need on her account? 4. Same facts as in #3, except now Elaine can set aside $50 per month. What rate of return does she need on her account? 5 Frank wants to buy a $10,000 car. The car dealer offers him financing of 60 payments at 9% interest. What will his payments be? 6. 7 Same facts as #5, except the dealer also offers 48 payments at 8%. Now what will Frank's payments be? Gayle has a credit card with a $500 balance on it and a 19% interest rate. If he wants to pay off his card in two years, what will his monthly payments be? How much interest will he pay? Same facts as #7, except now the balance is $2,500. What will Gayle's monthly payments be? How much interest will he pay? 8