Use the following information for the questions below. Alice Davies operates a day spa in Jacksonville, Florida. She estimates the following costs during the year: Miscellaneous operating costs =$15 per customer per service The average revenue of services is $65. Instructions a) How much is the contribution margin per service? b) Calculate the number of services Alice must provide in order to break even. Alice is considering upgrading the shower area to attract more business and increase prices. This will cost an additional $4.00 per service. with an annual increase in depreciation of $10.880, and will allow the average price of services to be increased to $75. How many services will Alice need to provide to break even under these changes