Assume that a company wants to separate a mixed cost into its variable and fixed elements for cost estimation purposes. It provided the following information:

Week Units Produced Mixed Cost

$112,000$ $ $35,300$

$213,500$ $ $39,500$

$314,000$ $ $41,100$

$413,700$ $ $39,620$

$511,500$ $ $34,400$

$610,100$ $ $32,050$

$710,800$ $ $32,380$

$814,400$ $ $41,890$

$911,200$ $ $34,200$

$1013,200$ $ $39,150$

Using least$-$squares regression, the estimate for the fixed cost per week is closest to: