Marcus invested $2000 in a bank account earning simple interest. The interest, I, he has after t years at an interest rate r is given by this equation.
l = 2000 rt
After 2 years, the total amount in the account was $2160. What was the annual interest rate?
Drag and drop an answer choice into each empty box below.
A)4%
B)8%
C) 16%
D)40%
The annual interest rate was .