PLz help with this question

how do i solve these 2 questions in excel and which formula do i use in excel

Assume that Social Security promises you $40,000 per year starting when you retire 45 years from today (the first $40,000 will be paid 45 years from now). If your discount rate is 7%, compounded annually, and you plan to live for 15 years after retiring (so that you will receive a total of 16 payments including the first one), what is the value today of Social Security's promise? Complete the steps below using cell references to given data or previous calculations. In some cases, a simple cell reference is all you need. To copy/paste a formula across a row or down a column, an absolute cell reference or a mixed cell reference may be preferred. If a specific Excel function is to be used, the directions will specify the use of that function. Do not type in numerical data into a cell or function. Instead, make a reference to the cell in which the data is found. Make your computations only in the blue cells highlighted below. In all cases, unless otherwise directed, use the earliest appearance of the data in your formulas, usually the Given Data section. 40,000 Annual payment Years until payment Discount rate Number of payments Value in year 44 Value today 15 Requirements In cell D11, by using cell references, calculate the value of Social Security's promise in year 44 (one year before you retire) (1 pt.). Note: The output of the expression or function you typed in this cell is expected as a positive number. In cell D12, by using cell references, calculate the value of Social Security's promise today (1 pt.). 16 Assume that your parents wanted to have $160,000 saved for college by your 18th birthday and they started saving on your first birthday. They saved the same amount each year on your birthday and earned 8% per year on their investments. Complete the steps below using cell references to given data or previous calculations. In some cases, a simple cell reference is all you need. To copy/paste a formula across a row or down a column, an absolute cell reference or a mixed cell reference may be preferred. If a specific Excel function is to be used, the directions will specify the use of that function. Do not type in numerical data into a cell or function. Instead, make a reference to the cell in which the data is found. Make your computations only in the blue cells highlighted below. In all cases, unless otherwise directed, use the earliest appearance of the data in your formulas, usually the Given Data section. a. How much would they have to save each year to reach their goal? If they think you will take five years instead of four to graduate and decide to have $200,000 saved just in case, how much would they have to save each year to reach their new goal? Financial goal $ 160,000 Interest rate 18% Number of periods 18 a. How much would they have to save each year to reach their goal? Amount to save If they think you will take five years instead of four to graduate and decide to have $200,000 saved just in case, how much would they have to save each year to reach their new goal? Financial goal $ 200,000 Amount to save