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 overhea seems to vary with labor-hours, machine-hours, or both. The following data were collected from last year's operations Month Labor-Hours Machine-Hours Overhead Costs 730 710 680 730 775 760 745 735 700 790 685 700 1,348 1,404 1,528 1,459 1,592 1,573 1,387 1,310 1,454 1,538 1,296 1,614 S 102,623 103,808 109,870 108,326 116,280 114,545 106,993 102,079 106,355 113,138 100,449 112,851 10 12 uired: a. 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.) Variable cost (per machine hour) Fixed cost b. Managers expect the plant to operate at a monthly average of 1,700 machine-hours next year. What are the estimated monthly overhead costs, assuming no inflation? (Round "Variable cost" answer to 2 decimal places.)