A family is Lunch bill is $10.19 before tax and tip using the percent shown for sales tax and gratuity how much money should the family pay the gratuity is calculated after tax

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.