An efficiency study conducted for a company showed that the number of devices assembled by the average worker t hr after starting work at 7 A.M. is given by
?
?
At what time during the morning shift is the average worker performing at peak efficiency?
?
A. At 9 A. M. the average worker is performing at peak efficiency.
B. At 10 A. M. the average worker is performing at peak efficiency.
C. At 7 A. M. the average worker is performing at peak efficiency.
D. At 8 A. M. the average worker is performing at peak efficiency.
Answer: A
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Solve the problem.The population of a small country increases according to the function B = 1,400,000e0.05t, where t is measured in years. How many people will the country have after 9 years?
A. 3,945,736 people B. 2,195,637 people C. 485,502 people D. 1,117,911 people
Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.21 qt = 
L
A. 22.3 B. 9.5 C. 19.9 D. 25.2
Express each of the following statements in symbols, using <, >, ?, or ?.7 is less than 10.
A. 7 > 10 B. 7 < 10 C. 7 ? 10 D. 10 < 7
Solve the problem.If it snows today, there is a 90 percent chance of snow tomorrow; however if it does not snow today, there is a 60 percent chance that it will not snow tomorrow. Construct the transition matrix that represents this situation.
A. 
B. 
C. 
D. 