need help with D and E on this. not sure of the formula.

Question Help how much to save for retirement. Assume you plan to save $4.500 per year with the first investment made one year from now. You think you can eam 7.5% per year on your investments and you plan to retire in 34 a. How much will you have in your retirement account on the day you retire? b. If, instead of investing $4.500 per year, you wanted to make one lump-sum investment today for your retirement that will result in the hat lump sum need to be? c. If you hope to live for 28 years in retirement, how much with the 28th withdrawal (assume your savings will continue to earn 7.5% in retirement)? d. If, instead. you decide to withdraw $128.000 per year in retirement (again with the first withdrawal one year after retiring), how your savings? (Use trial-and-error, a financial calculator: solve for "N", or Excel: function NPER) e. Assuming the most you can afford to save is $900 per year, but you want to retire with $1,000,000 in your investment account, how high of a return do you need to earm on your investments? (Use trial-and-error, a financial calculator: solve for the interest rate, or Excel: function RATE) would ar in retirement (starting one year after retirement) so that you will just exhaust your savings a. How much will you have in your retirement account on the day you retire? The amount in the retirement account in 34 years would be S 641518.35. (Round to the nearest cent.) b. If, instead of investing $4,500 per year, you wanted to make one lump-sum investment today for your retirement that will result in the same retirement saving. how much would that lump sum need to be? You will need to make one lump sum investment today of $ 54868.27. (Round to the nearest cent.) c. If you hope to live for 28 years in retirement, how much can you withdraw every year in retirement (starting one year after retirement so that you will just exhaust your with the 28th withdrawal (assume your savings will continue to earn 7.5% in retirement)? The amount you can withdraw every year in retirement is s 55430.52. (Round to the nearest cent) d. If, instead, you decide to withdraw 5128.000 per year in retirement (again vith the first withdrawal one year your savings? (Use trial-and-error, a financial calculator: solve for V" or Excel: function N after retiring), how many years will it take until you exhaust PER) You will exhaust your savings inyears. (Round to two decimal places)