Question One: (6 Points) A hospital's records show that the cost of carrying out health checks in the last five accounting periods have been as follows: Period Number of patients seen Total cost 650 $17,125 2 940 17,800 3 1260 18,650 4 990 17,980 1150 18,360 Required: Using high-low method, 1. Estimate the cost function. 2. Estimate the total cost for period 6 if the number of patients seen is 1500. 3. What is the difference between using the High low method and Least Square (Regression) method