ErgoPlus sells its main product, ergonomic mouse pads, for $13 each. its variable cost is $5.30 per pad. Fixed costs are $215,000 per month for columes up to 65,000 pads. Above 65,000 pads, monthly fixed costs are $270,000. Prepare a monthly flexible budget for the rpoduct, showing sales revenue, variable costs, fixed costs, and operating incoem for colume levels of 30,000, 50,000, and 75,000 pads.