Kara buchanan has decided to start kara cleaning, a residential housecleaning service company. she is able to rent cleaning equipment at a cost of $740 per month. labor costs are expected to be $65 per house cleaned and supplies are expected to cost $6 per house. required a-1. determine the total expected cost of equipment rental and the average expected cost of equipment rental per house cleaned, assuming that kara cleaning cleans 20, 30, and 40 houses during one month. (round "average per unit" answers to 2 decimal places.)