Solve the problem.Suppose that the total profit in hundreds of dollars from selling x items is given by 
Find the marginal profit at x = 4.
A. $400 per item
B. -$100 per item
C. $600 per item
D. -$800 per item
Answer: A
Mathematics
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Determine the sign of the trigonometric function.cos 345°
A. Negative B. Positive
Mathematics
Complete.
= 
A. 
B. 
C. 
D. 
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Find the length of the indicated portion of the curve.r(t) = (etcos t)i + (etsin t)j + 7etk, -ln 2 ? t ? 0
A. 
B. 
C. 
D. 
Mathematics
The cost (in dollars) of producing x units of a certain commodity is 
Find the average rate of change with respect to x when the production level is changed from x = 102 to x = 122.
a. 23.02 b. 14.42 c. 29.94 d. 16.42 e. 19.72
Mathematics