anice Huffman has decided to start Janice Cleaning, a residential housecleaning service company. She is able to rent cleaning equipment at a cost of $600 per month. Labor costs are expected to be $50 per house cleaned and supplies are expected to cost $7 per house. Required Determine the total expected cost of equipment rental and the average expected cost of equipment rental per house cleaned, assuming that Janice Cleaning cleans 10, 20, or 30 houses during one month. Is the cost of equipment a fixed or a variable cost