1. (15 points) For the cash flow shown below, find the present worth at year 0. Assume i = 10% and circle the closest value. Year 0: - $22,300 Year 1: $0 Year 2::- $3,660 Year 3: - $3,930 Year 4: - $4,200 Year 5: $7,600 2. (10 points) A factory expects to purchase a new equipment for its production line in 4 years. If the new equipment will cost $570,000, how much should the factory set aside each year, if the account earns 10% per year? 3. (10 points) What is the present worth of the following: I invest $3,500 in year zero and increase by 8% per year for 17 years - use an 8% interest factor. Choose the closest value. 4. (15 points) The Aggies Corporation estimates that the present worth now of income from an investment in renewable energy sources is $12,475,000. There will be no income in for the first four years, but in year 5 income will be $250,000, and thereafter it will increase according to an arithmetic gradient through year 16. What is the required gradient, if the interest rate is 8% per year