please answer B,C and D

Sunland, Inc., has collected the following information on its cost of electricity: Machine Hours Total Electricity Costs January 500 $230 February 540 $290 March 370 $190 April 440 $210 650 $280 May June 690 $320 310 $180 July 540 $270 August $100 240 September $320 730 October $340 840 November $330 600 December Your answer is correct Identify the high and low points, Machine Hours 540 S 340 High point 240 $ 100 Low point Using the high-low method, compute the variable cost of electricity per machine hour. {Round unit cost to 2 decimal places, es 52.75.) 040 per machine hour Variable costs (b) Compute the total fixed cost of electricity. (Round answer to 2 decimal places, 52.75) Fixed cost eTextbook and Media Save for Later Attempts of used Submit (c) Represent the electricity cost function in equation form. (Round answers to 2 decimal places, es: 52.75.) MH5 Total cost-$ Sarve for Later Attempts: 0 of 3 used Submit Answer (d) What is the expected electricity cost when 730 machine hours are used? (Round answer to 2 decimal places, eg52.75) Total cost $