High-low method; flexible budget Tijuana Tile has gathered the following information on its utility cost for the past six months. Machine Hours Utility Cost 1,300 $564 1,700 645 1,250 540 1,800 679 1,900 696 1,500 594 a. Using the high-low method, determine the cost formula for utility cost. y=s +$ per MH b. Prepare a flexible budget with separate variable and fixed categories for utility cost at 1,325, 1,500, and 1,675 machine hours. Variable utility cost 1,325 1,500 1,675 $ Fixed utility cost Expected total utility cost $ $