Mel owns a machine shop. In reviewing the shop's utility bills for the past 12 months, he found that the highest bill of $2,700 occurred in August when the machines worked 1,300 machine hours. The lowest utility bill of $2,500 occurred in December when the machines worked 800 machine hours. Requirements 1. Calculate the variable rate per machine hour and the total fixed utility cost 2. Show the equation for determining total utility cost for the machine shop. 3. If Mel anticipates using 1,200 machine hours in January, predict the shop's total utility bill using the equation ion for detemining total util Requirement 2