The answer is B. 58
Using the equation to get 29. Then multiply by 2 to get 58.
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.
Write the equation of the line through (5,-4); m = 1
Answer:
d
Step-by-step explanation: