did the work the answer is a
Answer choices xx?
<span>]to find the number of bananas you have to take the total 3.8 and subtract apples 3.8-a</span>
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.