Suppose the average costs of a mining operation depend on the number of machines used, and average costs, in dollars, are given by
, 
, where x is the number of machines used. What is the minimum average cost? Round your answer to the nearest dollar.
?
A. $0
B. $35
C. $490
D. $245
E. $8,582
Answer: C
Mathematics
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Find the largest open interval where the function is changing as requested.Increasing y = (x2 - 9)2
A. (-?, 0) B. (-3, 0) C. (-3, 3) D. (3, ?)
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Evaluate. If necessary, find common denominators and simplify completely.5
+ 8
- 2
A. 10
B. 10
C. 10
D. 10
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Perform the indicated operations. Write the resulting polynomial in standard form.(6x + 11y)2
A. 6x2 + 121y2 B. 6x2 + 132xy + 121y2 C. 36x2 + 121y2 D. 36x2 + 132xy + 121y2
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Write out the first five terms of the sequence.{sn} = 
A. s1 = 
, s2 = 
, s3 = 
, s4 = 
, s5 = 
B. s1 = 
, s2 = 
, s3 = 
, s4 = 
, s5 = 
C. s1 = 
, s2 = 
, s3 = 
, s4 = 
, s5 = 
D. s1 = 
, s2 = 
, s3 = 
, s4 = 
, s5 = 
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