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