90% is 80% of what number

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay

Adeposit of 5500 at 6% for 3 years equals

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table