Answer:
pairs
Step-by-step explanation:
Given
Profit on selling 'x' pairs of shoes is 
Find the derivative of the function to find out the critical points

Thus, for 4 pair of shoes profit is maximize.
Answer:
Tyrell is in the lead by 2 points.
Step-by-step explanation:
Example:
Imagine they both started at 10 points. If Parline lost 5 points (10 - 5) while Tyrell lost 3 points (10 - 3), then it is clear that Tyrell's points (7 remainings) are more than Parline's points (only 5 remainings). Hence, Tyrell is in the lead by 2 points.
Answer: m∠RQS=104° and m∠TQS=76°
Step-by-step explanation:
Answer:
-32
Step-by-step explanation:
9(-3) + (-15) ÷ 3 =
-27 + -5 = -32
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-Chetan K
I think it's D because you can't have negative minutes and after 8 minutes you can't go any deeper than 0 inches.