One can solve for payments $($PMT$),$ periods $($N$),$ and interest rates $($I$)$ for annuities. The easiest way to solve for these variables is with a financial calculator or a spreadsheet.

a$.$ What amount will be in your account at the end of $4$ years? Do not round intermediate calculations. Round your answer to the nearest cent. $

b$.$ Assume that your deposits will begin today. What amount will be in your account after $4$ years? Do not round intermediate calculations. Round your answer to the nearest cent. $ be made one year after you retire and you anticipate that your retirement account will earn $15\%$ annually.

a$.$ What amount do you need in your retirement account the day you retire? Do not round intermediate calculations. Round your answer to the nearest cent. $ calculations. Round your answer to the nearest cent. $