Find the simple interest earned to the nearest cent for each principal interest rate, and time

Question

$500,4%, 2 years

Answer 1

I = PRT

I = 500 * 0.04 * 2

I = ?

Answer 2

l=40

Answer 3

300 5% 2years

Answer 4

Simple interest

Answer 5

Simple interest on 280 for 5years at 3% per annum

Answer 6

$300 at 8% for 4 years