etty would like to see a chiropractor and a physical therapist for back pain . Her demand for these :es depends on the price as well as her income and preferences . Her available budget is D .The price of chiropractor is $80 per visit . The price for physical therapy visits is $40 per visit. equation for her budget is me = (Price of Chiropractor Visit * Chiropractor Visits ) + (Price of PT Visit * PT Visits) he that the price of chiropractor visits increases to $90 per unit, how does this change the at constraint