What is the sum of 3 sixteen and 2 nines

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

What is the missing step in this proof ?

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.