Calculating Interest

THE QUESTIONS THAT ARE IN BOLD ARE THE ONES I AM STUCK ON. THERE ARE ONLY 3 TO BE ANSWERED

Using 360 days as the denominator, calculate interest for the following notes using the formula I = P R T. If required, round your answers to the nearest cent.

Principal Rate Time Interest$

5,100 6.00% 30days $

1,000 7.50 60 $12.50

3,900 8.00 120 $

950 6.80 95 $17.05

1,250 7.25 102 $25.68

2,800 7.00 90 $