Suppose that when your friend was​ born, your​ friend's parents deposited ​$9000 in an account paying ​%6.6 interest compounded . What will the account balance be after 13 ​years?

$250 deductible means jane must pay the first $250 of her bill. so the insurance company paid = (80% of bill) - deductible = (0.8 x $2550) - $250 = $2040 - $250 = $1790 and jane's cost is = (bill) - (insurance payment) = $2550 - $1790 = $760