1. Alex deposits $9,000 in a bank account that pays 6% compund interest. How much will he have in four years? (2 Points) Enter your answer 2. The total Payment owed Using simple interest is defined as what. Please give an example (2 Points) Enter your answer 3. Your unclue has provided you with a siy year certificate of deposit that pays 9% simple interest annually, You recieve a check from the bank every year for $100. What is the principal amount of the certificate? (2 points)