Answer the questions below: 1- Maintenance costs for a small bridge with an expected 50-year life are estimated to be $1,000 each year for the first 5 years, followed by a $10,000 expenditure in the year 15 and a $10,000 expenditure in the year 30 . If i=10% per year, what is the equivalent uniform annual cost over the entire 50-year period. (Draw the cash flow diagram) 2-Carol just entered college. Her grandparents have promised to give her $25,000 toward a new car if she graduates in 4 years. Alternatively, if she takes 5 years to graduate, they offered her $5000 each year starting after her second year is complete and an extra $5000 when she graduates. Draw the cash flow diagrams first. Then, use per year to show Carol how determine the following for each gift her grandparents offered: (use i=6% ) 1-Present worth P now 2-Future worth F five years from now 3-Equivalent annual amount A over a total of 5 years