Alden Co$.$s monthly unit sales and total 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 Units Sold Total Cost Month Units Sold Total Cost

$1322,000$ $ $159,5007358,000$ $ $263,504$

$2167,000103,2508272,000153,750$

$3267,000207,600975,60063,000$

$4207,000102,00010152,000132,625$

$5292,000203,5001196,00096,000$

$6192,000114,00012102,00079,650$