We would apply the frmula for determining simple interest which is expressd as
I = (PRT)/100
Where
I = interest
P = principal or amount invested
R = Interest rate
T = time in years
From the information given,
P = 8891
R = 3.65%
T = 26
Interest = (8891 * 3.65 * 26)/100 = 8437.559
The total amount that Bill would pay after 26 years would be the sum of the capital and the interest
Total amount = 8891 + 8437.559 = 17328.559
Rounding to the rearest cent(2 decimal places),
Total amount = $17328.60