1.Investing in the General Motors costs $10,000 today and pays back $11,500 two years from now. If investing in the Ford costs $8,000 today and pays back $4,500 each year for two years, which alternative is inferior? Assume an interest rate of 5%.
2.In 2000, the rent for my apartment was $350/month. Utilities were $65/month and parking was free. Today, the same items total $650/month. If CPI in 2000 was 120, what is the CPI today?
3.Estimate the average hourly, average daily, and minimum hourly residential sewage flows from an area serving a population of 1500 people. Assume that the lenghth of sewer and house drains equals 3.0 km and that infiltration occurs
4.What is the concentration of NH3 (in mg/L) of household ammonia that contains 3.00 percent by wieght of NH3? Assume the density of water = 1000kg/m^3