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Davidson Engine Repairs provides maintenance and repair services for small engines such as those found in lawn mowers, power saws, and snow throwers. The repair

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Davidson Engine Repairs provides maintenance and repair services for small engines such as those found in lawn mowers, power saws, and snow throwers. The repair shop costs include the salaries for the mechanics, Insurance and depreciation on the repair equipment, materials and parts used for the jobs, and utilities. The repair shop manager would like to develop a model for predicting repair costs and over the past 10 months has carefully recorded the total repair costs incurred, along with the number of maintenance and repair jobs completed each month. The data are shown below: Month January February March April May June July August September October Jobs 280 303 241 344 357 290 248 184 169 143 Repair Costs $ 49, 710 $ 52,381 $ 44,082 $ 59,268 $ 60,114 $ 50,240 $ 45,246 $ 33,943 $ 32,238 $ 27,586 Required: 1. Not available in Connect. 2. Using the high-low method, estimate a cost formula for repair costs. Express the formula in the form Y= a + bx 3. Not available in Connect

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