Solve the problem.Suppose c(x) = x3 - 20x2 + 30,000x is the cost of manufacturing x items. Find a production level that will minimize the average cost of making x items.
A. 9 items
B. 12 items
C. 11 items
D. 10 items
Answer: D
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Solve the problem. Round your answer to 5 decimal places when necessary.The table shows the leading causes of death for one country in a single recent year. 
Assume a population of 68.5 million.What is the empirical probability of death by AIDS during a single year?
A. 0.00009 B. 0.009 C. 0.00090 D. 0.62
Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 29,400,000,000,000 B. 600,000 C. 29,400,000 D. 600,000,000,000
Fill in the missing value.52,814 mL = _____________ daL
A. 528,140 B. 0.52814 C. 5.2814 D. 52.814
Determine the value of the trigonometric function of ? using the given information.If sin ? = - 
and tan ? = 
, then determine the value of sec ?.
A. -2
B. 
C. - 
D. - 