The Viola’s monthly payment more than the loan is unsubsidized than if the loan is subsidized is $35.05.
<h3>What is compound interest?</h3>
Compound interest is the amount charged on the principal amount and the accumulated interest with a fixed rate of interest for a time period.
The formula for the final amount with the compound interest formula can be given as,

Here, A is the final amount (principal plus interest amount) on the principal amount P of with the rate r of in the time period of t.
Viola took out a $8,470 Stafford loan at the beginning of her four-year college career. The loan has a duration of ten years and an interest rate of 7. 5%, compounded monthly.
Put this values in the above formula as,

For the four years, the monthly payment is,

The monthly payment of unsubsidized loan is $237.97.
The monthly payment of subsidized loan is $202.80.
The difference between the unsubsidized and subsidized loan monthly payment is,

Thus, the Viola’s monthly payment more than the loan is unsubsidized than if the loan is subsidized is $35.05.
Learn more about the compound interest here;
brainly.com/question/24274034