jennifer invested 3300 in a savings account with a yearly interest rate of 6% for 9 years. How much simple interest did she earn?

Jennifer has 3,300 in her saving account, and 9 years of account interest. So, you have to multiple Jennifer's saving account and her 9 years account interest.

3,300 x 9 = 29,700

Now, once you have the total of her saving account, take that total saving account and the 6% simple interest rate as you are dividing both equations.

29,700 : 0.06 = 495,000

Therefore your answer is 495,000 for the total of simple interest that Jennifer earned.