4 Consider two air-conditioning systems with the cash flow estimates as given below Use AW analysis to determine the sensitivity of the economic decision to MARR values of 4%, 6%, and 8% per year 25 System Air-Conditioning System 1 Air-Conditioning System 2 points First cost, $ -9,000 -13,000 Skipped AOC, $ per year -500 -175 Salvage value, $ -100 -300 New compressor and motor cost at midlife, $ -1,400 -2,900 eBook Life, years 8 12 Hint The annual worth of air-conditioning system 1 when the MARR is 4% is $ The annual worth of air-conditioning system 2 when the MARR is 4% is $ Ask The annual worth of air-conditioning system 1 when the MARR is 6% is $ In References The annual worth of air-conditioning system 2 when the MARR is 6% is $ The annual worth of air-conditioning system 1 when the MARR is 8% is $ The annual worth of air-conditioning system 2 when the MARR is 8% is $ When the MARR is 4% (Click to select) |is selected. When the MARR is 6% (Click to select) v is selected. When the MARR is 8% (Click to select) v is selected