If you invest $$100,000$ into an account that earns $8$ percent annual return, how much will you have in the account in $20$ years?

If you owe $$150,000$ at the end of $15$ years, how much should your creditor accept in payment immediately if she could earn $7$ percent annual return on her money?

At an interest rate of $8$ percent annually, how long will it take for a sum to triple?

You have just invested $$60,000$ for your son $($age one$).$ The money will be used for your son's education $17$ years from now. You estimate that you will need $$250,000$ for your son's education by the time the boy goes to school. What rate of return will you need to achieve this goal?

A company has an unfunded pension liability of $$1,500$ million that must be paid in $30$ years. To assess the value of the firm's stock, financial analysts want to discount this liability back to the present. If the relevant annual rate of return is $7\mathrm{.}5$ percent, what is the present value of this liability?

Answer all $5$ questions and show work please