My Staffing Services (MSS) average direct salary cost/expense for the first five months in 2023 were as follows: Assume that all the consulting activity levels mentioned in this problem are within the relevant rang ? The average consulting fees (revenue / sales) charged by MSS to the clients is $125 per hour. Required (show all calculations): Using the high/low method, calculate the following items for MSs: a. Variable cost per hour. (round to 2 decimal \$xx.xx) b. Total fixed cost per period. c. Total expected costs at the 750 hours level of consulting activity. [Hint: use the table format below to determine the high-low method. Enable the HTML Editor to write your answer]