Hello, could someone please help me solve these problems in detail showing the correct steps and procedure. Thank you

4) If the current rate of interest is 7%, then the future value (FV) of an investment that pays $1200 per year and lasts 18 years is closest to ________. A) $24,479 B) $40,799

C) $48,959 D) $57,119 Answer: B Explanation: B) N = 18 I=7

PMT = $1200 PV = 0 Compute FV = $40,799

5) You are borrowing money to buy a car. If you can make payments of $320 per month starting one month from now at an interest rate of 12%, how much will you be able to borrow for the car today if you finance the amount over 4 years? Explanation: D) N = 48 I = 12 /12 PMT = $320 FV = 0 PV = $12,151.67

6) Since your first birthday, your grandparents have been depositing $100 into a savings account every month. The account pays 9% interest annually. Immediately after your grandparents make the deposit on your 18th birthday, the amount of money in your savings account will be closest to ________. Explanation:

N = 216 PMT = $100 I = 9/12 PV = 0 Compute FV = $53,635.167

7) A bank is negotiating a loan. The loan can either be paid off as a lump sum of $80,000 at the end of four years, or as equal annual payments at the end of each of the next four years. If the interest rate on the loan is 6%, what annual payments should be made so that both forms of payment are equivalent?