$1.$ Twelve years from today you begin making yearly deposits of $$870.$ How much is available to withdrawal from this account $24$ years from today immediately after the last deposit? The interest rate is $15\%$ per year.

$2.$ Include the cash flow diagram in your supporting work.You plan to borrow $$7000$ two years from now $($time $2).$ The interest rate is $8\%$ per year. What single amount $($including interest$)$ willyou have to repay $8$ years from now? Include the cash flow diagn your supporting work.