Can someone please check my work as well as help me solve the rest of the blanks. Also, the yellow boxes are the only ones that need answers.

IThe following information applies to the questions displayed belowj Alden Co. s monthly sales and cost data for its operating activities of the past year follow. Management wants to use these data to predict future fixed and variable costs. Month sales Total Cost Month sales Total Cost 357,500 259,900 322,500 160,000 167,500 03,750 154,250 272,500 267,500 208100 62,500 75,500 207,500 102,500 152,500 33125 96,500 292,500 204,000 96,500 192,500 114,500 02,500 79150 Value 5.00 points 2. Estimate both the variable costs per sales dollar and the total monthly fixed costs using the high-low method. (Do not round intermediate calculations.) High-Low method Calculation of Variable Cost per Sales Dollar 197400 Variable cost per sales dollar Cost at high point minus cost at low point Change in cost Volume at high point minus volume at low point 282,000 Change in volume High-Low method Calculation of Fixed Costs 259,900.00 Total cost at the high point Variable costs at the high point: Volume at the high point 357,500 sales dollars 0.70 Variable cost per sales dollar 197,400.00 Total variable costs at the high point S 62,500.00 Total fixed costs 62,500.00 Total cost at the low point Variable costs at the low point Volume at the low point 75,500 sales dollars 070 Variable cost per sales dollar 52,850.00 Total variable costs at the low point 9,650.00 Total fixed costs 0.70