Penny Hassan runs the Shear Beauty Salon near a college campus. Several months ago, Penny used some unused space at the back of the salon and bought two used tanning beds. She hired a receptionist and kept the salon open for extended hours each week so that tanning clients would be able to use the benefits of their tanning packages. After three months, Penny wanted additional information on the costs of the tanning area. She accumulated the following data on four accounts: Supplies and Wages January $1,804 February Maintenance Equipment Depreciation Electricity Tanning Minutes Number of Visits $1,488 $159 $368 4,119 405 1,743 1,917 March 1,827 4,050 159 159 429 693 3,975 6,639 390 573 Penny decided that wages and equipment depreciation were fixed. She thought supplies and maintenance would vary with the number of tanning visits and that electricity would vary with the number of tanning minutes. Required: 1. Calculate the average account balance for each account. Calculate the average monthly amount for each of the two drivers. (Round all answers to the nearest dollar or the nearest whole unit.) Use your rounded answers in all subsequent computations. Average Account Balance Wages Supplies & Maintenance Equipment Depreciation Electricity Tanning Minutes Number of Visits