Refer to Problem 6-24. Set up a spread-sheet to answer various "what if" questions such as "How does the IRR vary as the cost of gasoline takes | on these values: $3.00 per gallon, $4 per gallon, and I $5.00 per gallon?" Also, how does IRR change when the 'ownership period changes across this range: 3 years, 4 years, 5 years, 6 years, and 7 years? How does the IRR vary when the differential resale value is $1,000, $2,000, $3,000, and $4,000?