Modern refurbishing inc. is considering a project that has the following cash flow data. what is the project's irr? note that a project's irr can be less than the cost of capital (and even negative), in which case it will be rejected. year 0 1 2 3 4cash flows −$850 $300 $290 $280 $270a. 13.13%b. 14.44%c. 15.89%d. 17.48%e. 19.22%

"jake’s roof repair has provided the following data concerning its costs: fixed cost per month cost per repair-hour wages and salaries $ 20,900 $ 15.00 parts and supplies $ 7.70 equipment depreciation $ 2,800 $ 0.35 truck operating expenses $ 5,720 $ 1.60 rent $ 4,690 administrative expenses $ 3,850 $ 0.50 for example, wages and salaries should be $20,900 plus $15.00 per repair-hour. the company expected to work 2,600 repair-hours in may, but actually worked 2,500 repair-hours. the company expects its sales to be $47.00 per repair-hour. required: compute the company’s activity variances for may."