please show work and include cash flow diagram

7. (10 Points) A piece of machinery can be bought for S 20,000 cash or $5000 down and payments of $2000 a year for 10 years. What is the annual interest rate? 2000 es Scoo A-sooo sloo 8. (10 Points) You haveldeposited $10,000 today in an account. You will deposit a monthly payment of $30with a gadienvobsse for the next 5 years. From years 6 to ten, you will deposit a constant monthly payments of $300. How much have you accumulated at the end of ten years