8.6 The average number of visits per week equal 640 when the copayment is $40, but the copayment may rise to $45. You believe that the price elasticity of demand is -0.25. Forecast the percentage change in visits. Percentage change in visits = price elasticity percentage change in price. If you are right, prices may rise by 12.5% = 5/40. So, your forecast is that visits will drop by 3.125%, a decline of 20