I need help please show your steps in excel.

a. Someone in the 15 percent tax bracket can earn 12 percent annually on his investments in a tax-exempt IRA account: What wil be the value of a $13,000 investment in 5 years? 10 years? 20 years? You may use Appendix C to answer the questions. Do not round intermediate calculations. Round your answers to the nearest dollar. in 5 years: $ in 10 years: 5 in 20 years: 5 b. Suppose the preceding 12 percent retum is taxable rather than tax-deferred and the taxes are paid annually. What will be the after-tax value of his $13,000 investment after 5, 10, and 20 years? Do hot round intermedate calculations, Round your answers to the nearest dollar. in 5 years! 5 in 10 years: 5 in 20 years: 5