Office Plus sells its main product ergonomic mouse pads for 512 each its variable cost is $5 60 per pad Fixed costs are 5215,000 per month for volumes up to 65 000 pads Above 65,000 pads monthly fixed costs are $250 000 Prepare a monthly flexible budget for the product showing sales revenue variable costs fixed costs and operating income for volume levels of 40,000 45,000 and 75,000 pads