Answer:
$60,125
Step-by-step explanation:
We'll use the below formula to determine how much Devin will pay altogether;

where A = final amount = ?
P = principal amount = $2600
r = interest rate in decimal = 8.75/100 = 0.0875
t = time in years = 15 years
Substituting the given values into our formula and solving for A, we'll have;

Therefore, Devin will pay $60,125 altogether.