Help please

1. Suppose Link deposits $5,000 into an account earning 5.875 percent interest, compounded monthly. How many years (rounded to one decimal place for example, 32.1843 year = 32.2) will it take for Link 's account to be worth $20,000? Suppose Crash Bandicoot deposits $5,000 into an account earning 4 percent interest, compounded monthly and Crash also make monthly contributions of $50 (rst monthly contribution made one month after the initial deposit is made). How many years (rounded to one decimal place for example, 32.1843 year = 32.2) will it take for the account to grow to $7,500 in this case? Assume that Ratchet and Clank are trying to borrow money om you to nance their new business. Assume that Ratchet and Clank promise to repay you in three installments, one payment of $5,000 to be made exactly 2 years from today, a second payment of $10,000 to be made exactly 5 years from today, and a nal payment of $15,000 to be made 8 years 'om today. If your opportunity cost of funds is 7.5% p.a., (that is, use an interest rate of 7.5% for this question), how much should you be willing to lend Ratchet and Clank today? What is the future value at the end of year 28 of depositing $5,000 today, $3,500 at the end of years 1, 2 and 3, $5,000 at the end of years 4, 5, 6 and 7 and $4,250 at the end of years 8, 9, 10, 11 and 12 into an account that pays 9.5% p.a.? (N o deposits will be made into the account after year 12)