PainFree sells its main product, ergonomic mouse pads, for $11 each. Its variable cost is $5.60 per pad. Fixed costs are $225,000 per month for volumes up to 65,000 pads. Above 65,000 pads, monthly fixed costs are $280,000. Prepare a monthly flexible budget for the product, showing sales revenue, variable costs, fixed costs, and operating income for volume levels of 45,000,50,000, and 70,000 pads