Please explain how to input probles into TI83 calculator in order to get accurate answer

2. Calculate the desired amount for each situation below: You have $20,000 to save for retirement. You plan to retire in 24 years and expect to earn 9% per year. How much will you have when you retire? You want $300,000 savings when you retire. You want to retire in 12 years. You currently have $100,000 that will earn interest for the 12 years. You will save an equal amount each year for the 12 years to make up any deficit Assuming an 8% return on your investment, how much is your annual contribution? You currently have S100,000 saved and you want to purchase an annuity that will make equal payments for 10 years. AT 700, how much are the payments that will be received? You want to have $20,000 at the end of the year. You will make 12 monthly investments that earn 12% annually. How much are the monthly investments? Your mother promises to buy you your first car. You want to buy the car as soon as you graduate in 2 years. The car will cost $20,000. How much does she need to put aside today to pay for the car if the money earns 6%. a. b. c. d. e