Mathematics, 19.10.2020 23:01 pattykline

a roofer charges $60 for the first hour of service call and $25 per hour for each additional hour. The roofer also charges a fee for all materials used plus 30% over the cost of the materials. Let r-roofer's cost of materials and h= number of hours worked. What expression could be used to find the cost of a service call

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a roofer charges $60 for the first hour of service call and $25 per hour for each additional hour. T...