below: Online tion come statement for May Electrical costs of one of Reifel Corporation's factories are listed Machine Electrical Hours Cost March 284 $5.848 April 274 $5.741 May 302 $5,982 June 254 $5.579 July 311 $6.046 August 269 $5.746 September 259 $5.631 October 270 $5.739 November 268 $5.714 Management believes that electrical cost is a mixed cost that depends on machine-hours Required: a. Estimate the variable cost per machine-hour and the fixed cost per month using the high-low method. Show your work Round the variable cost per unit to the nearest cent and the fixed cost to the nearest whole dolar b. Express these costs as a formula in the format y=mx+b c. Using the formula derived above, estimate the electrical cost when machine-hours in a month are 280. Round to the nearest dolar. Show your work. Chility ww