Adriana Corporation manufactures football equipment. In planning for next year, the managers want to understand the relation between activity and overhead costs. Discussions with the plant supervisor suggest that overhead seems to vary with labor-hours, machine hours, or both. The following data were collected from last year's operations Month Labor- Hours 720 720 675 735 780 750 740 730 715 795 670 705 Machine- Hours 1,350 1,406 1,520 1,457 1,595 1,580 1,387 1,309 1,463 1,543 1,292 1,614 Overhead Costs $102,647 103,721 109,852 108,391 116,132 114,519 107,003 102,027 106,383 113,074 104,785 118,470 10 Required: a. Use the high-low method to estimate the fixed and variable portions of overhead costs based on machine-hours. b. Managers expect the plant to operate at a monthly average of 1600 machine-hours next year. What are the estimated monthly overhead costs, assuming no inflation? Complete this question by entering your answers in the tabs below. Required A Required B Use the high-low method to estimate the fixed and variable portions of overhead costs based on machine-hours. (Round "Variable cost" answer to 2 decimal places)