You borrow $50000 from a bank with an interest rate 7.5% annually compounded monthly for 20 years. 1. What will be your monthly payment for these twenty years. 2. a. You decided to pay back $15000 at the end of the third year: What will be your monthly payment for the next 17 years. Sketch a cumulative cash flow diagram. b. If you decided to pay the same monthly payment, how many months you need to pay to. Sketch the level control loop on a vessel. Mark the instruments clearly.