Namount of $15,000 is borrowed for 10 years at 8.75% interest, compounded annually. if the loan is paid in full at the end of that period, how much must be paid back?

We should determine amount of interest per year.
Multiply the percentage to the former loan.
interest per year = 8.75% × 15,000
interest per year = 0.0875 × 15,000
interest per year = 1,312.5
Amount of interest each year is $1,312.5

Estimate interest for 10 years
interest 10 years = interest per year × 10
interest 10 years = 1,312.5 × 10
interest 10 years = 13,125
Amount of interest for 10 years is $13,125

Calculate how much he pay
total = the loan + the interest
total = 15,000 + 13,125
total = 28,125
The total he must pay is $28,125