Regression 1 : Medical supplies costs =a+(b Number of procedures) Regression 2: Medical supplies costs =a+(b Number of patient-hours ) Regression 3: Medical supplies costs a+(b1 No. of procedures )+(b2 No. of patient-hours) 4. The company would like to know how much the direct cost of one treatment for a patient. In one month, the clinic expects to serve 1,500 patients and each patient will be treated for 2 hours on average. The estimated operating costs for one month are the following: How much is the direct cost of treatment per patient