You have just made your first $5,200 contribution to your retirement account. Assume you earn a return of 12 percent per year and make no additional contributions. a. What will your account be worth when you retire in 43 years? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. What if you wait 10 years before contributing? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)