Final answer:
Bertha will owe approximately $15,821.84 when she begins making payments on her student loan.
Step-by-step explanation:
To calculate the total amount Bertha will owe when she begins making payments on her subsidized student loan, we need to calculate the interest that accrues over the 15-month period. The formula for compound interest is:
A = P(1 + r/n)^(nt)
Where:
- A is the total amount
- P is the principal amount, which is $14,250 in this case
- r is the annual interest rate in decimal form, which is 8.4% or 0.084
- n is the number of times interest is compounded per year, which is 12 for monthly compounding
- t is the time in years, which is 15/12 = 1.25 for 15 months
Plugging in the values, we get:
A = $14,250(1 + 0.084/12)^(12*1.25)
A ≈ $15,821.84
Therefore, Bertha will owe approximately $15,821.84 when she begins making payments on her student loan.