22. Scientific Instruments, Inc. uses a MARR of 10% per year. The company is evaluating a new process to reduce water effluents from its manufacturing processes. The estimate associated with the process follows. In evaluating the process on the basis of an internal rate of return (IRR) analysis, the correct equation to use is:

	New Process
Initial Cost	$40,000
Life (years)	3
Annual Cost	$13,000
Salvage Value	$5,000

1. $0 =- $40,000 + 13,000(P/A , IRR ,3) + $5000( P/F , IRR ,3)
2. $0 =- $40,000(A/P, IRR ,3) - $13,000 + $5000( A/F , IRR ,3)
3. $0 =- $40,000(F/P, IRR ,3) - $13,000(F/A, IRR, 3) + $5000
4. Any of the above

E. $0 =- $40,000 + $13,000(P/A , MARR ,3) + $5000( P/F , IRR ,3)