Solve the problem.The total cost, in dollars, of producing x cell phones is approximated by the function 
Find the minimum average cost.
A. The minimum average cost is $75 when x = 875 cell phones.
B. The minimum average cost is $10 when x = 100 cell phones.
C. The minimum average cost is $74 when 
cell phones.
D. The minimum average cost is $875 when x = 75 cell phones.
Answer: B
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Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the y-axis.y = x2, y = 5 + 4x, for x ? 0
A. 
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B. 
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C. 
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D. 
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Find the exact value of the expression.cos (45° - 30°)
A. 
B. 
C. 
D. 
Considering each item independently and holding other things constant, which of the following actions would reduce a firm's need for additional capital (additional funds needed, AFN)?
A. Increase the firm's dividend payout ratio. B. Decrease the firm's days sales outstanding (DSO). C. Decrease the firm's profit margin. D. Increase the firm's expected sales growth. E. Decrease the firm's accrual accounts (e.g., accrued wages and taxes).
Find the limit.
A. 
B. 
C. 
D. 1