Exercise 6-34 Estimating Cost Behavior by Multiple Methods (Appendix) (LO 6-1, 6-2, 6-5, 6-9) Gator Beach Marts, a chain of convenience grocery stores in the Fort Lauderdale area, has store hours that fluctuate from month to month as the tourist trade in the community varies. The utility costs for one of the company's stores are listed below for the past six months. Total Hours Total Utility Month of Operation Cost January 550 $1,620 February 600 1,700 March 700 1,900 April 500 1,600 May 450 1,350 June 400 1,300 Required: 1-a. Use the high-low method to estimate the cost behavior for the store's utility costs. Express the cost behavior in formula form (Y= a + bx). 1-b. What is the variable utility cost per hour of operation? 3-a. Construct an Excel spreadsheet and use the Excel commands to perform a least-squares regression. Estimate the cost behavior for the store's utility cost. Express the cost behavior in formula form. 3-b. What is the variable utility cost per hour of operation? 4. During July, the store will be open 300 hours. Predict the store's total utility cost for July using each of the cost-estimation methods employed in requirements (1) and (3). Complete this question by entering your answers in the tabs below. Req 1A Req 1B Req 3A Req 3B Req 4 What is the variable utility cost per hour of operation? (Round your answer to 2 decimal places.) Variable utility cost per hour