Joyce Murphy runs a courier service in downtown Seattle. She charges clients $0.50 per mile driven. Joyce has determined that if she drives 3, 300 miles in a month, her total operating cost is $875. If she drives 4, 400 miles in a month, her total operating cost is $1, 095. Joyce has used the high-low method to determine that her monthly cost equation is: total monthly cost = $215 + $0.20 per mile driven. 1. Determine how many miles Joyce needs to drive to break even. (Round your intermediate calculations to 2 decimal places and final answer to the nearest whole number.) 2. Calculate Joyce's degree of operating leverage if she drives 4, 200 miles. (Round your intermediate calculations to 2 decimal places and final answer to 4 decimal places.) 3. Suppose Joyce took a week off and her sales for the month decreased by 25 percent. Using the degree of operating leverage, calculate the effect this will have on her profit for that month. (Round your intermediate calculations and final answer to 4 decimal places.) Effect on Profit %

The gilbert instrument corporation is considering replacing the wood steamer it currently uses to shape guitar sides. the steamer has 6 years of remaining life. if kept, the steamer will have depreciaiton expenses of $650 for five years and $325 for the sixthyear. its current book value is $3,575, and it can be sold on an internet auction site for$4,150 at this time. if the old steamer is not replaced, it can be sold for $800 at the endof its useful life. gilbert is considering purchasing the side steamer 3000, a higher-end steamer, whichcosts $12,000 and has an estimated useful life of 6 years with an estimated salvage value of$1,500. this steamer falls into the macrs 5-year class, so the applicable depreciationrates are 20.00%, 32.00%, 19.20%, 11.52%, 11.52%, and 5.76%. the new steamer is fasterand allows for an output expansion, so sales would rise by $2,000 per year; the newmachine's much greater efficiency would reduce operating expenses by $1,900 per year. to support the greater sales, the new machine would require that inventories increase by$2,900, but accounts payable would simultaneously increase by $700. gilbert's marginalfederal-plus-state tax rate is 40%, and its wacc is 15%.a. should it replace the old steamer? b. npv of replace = $2,083.51