use standard notation

Class: MTWR 2. An environmental engineer must recommend one of two methods for monitoring high colony counts of E coli and other bacteria in watershed area"hot spots." Estimates are tabulated, and the MARR is 10% per year. (20 points) Method A Method B Initial cost, S Annual operating cost, S per year 100,000 -30,000 in year I increasing by 5000 each year 250,000 -20,000 Life, years 6 a. Use future worth analysis to select the better method. b. For a study period of 3 years, use FW analysis to select the better method. s-100,000/