Jared invested $100 two years ago at 8 percent interest. The…

Jared invested $100 two years ago at 8 percent interest. The first year, he earned $8 interest on his $100 investment. He reinvested the $8. The second year, he earned $8.64 interest on his $108 investment. The extra $.64 he earned in interest the second year is referred to as:

Miles invested $5,000 ten years ago and expected to have $10…

Miles invested $5,000 ten years ago and expected to have $10,000 today. He has neither added nor withdrawn any money since his initial investment. All interest was reinvested and compounded annually. As it turns out, he only has $8,400 in his account today. Which one of the following statements must be true?