Entity Z is trying to obtain a cost estimate for the costs of repairs the following monthly repair costs have been recorded for the past six months. Number of Month machines repaired cost of repairs 1 38 31,000 2 41 32,700 3 25 26,500 4 21 23,600 5 36 29,900 6 32 28,900 REQUIRED Use high/low analysis to estimate the fixed costs of repairs each month and the variable cost per machine required. Estimate the expected costs of repairs in a month when 30 machines are repaired. SD