Developing an equation from average costs the desert dog and cat hotel is a pet hotel located in las vegas. assume that in march, when dog-days (occupancy) were at an annual low of 500, the average cost per dog-day was $22. in july, when dog-days were at a capacity level of 4,500, the average cost per dog- day was $8 (a) develop an equation for monthly operating costs. (let x- dog-days per month) total cost- (b) determine the average cost per dog-day at an annual volume of 24,000 dog-days. (round to the nearest cent.)