nvestment had returned $2,240 over its life. If the Certificate of Deposit pays a simple interest rate of 3.2% and her initial investment was $20,000, how long had the money been invested?

Grading scale 1 has the following weights- (tests- 50% quiz- 25% homework- 15% final exam- 10%). calculate your final average if your performance in the class is as follows-test grades- {88, 84, 90, 75, 70, 81); quiz grades- {88, 67, 90, 90, 45, 99, 76, 98, 100}; homework- 90; final exam- 75