Determine whether F is conservative.F = 8x7y8i + 
j - 
k
A. conservative
B. not conservative
Answer: A
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Determine the period and range for the function.y = 2 cos(x + ?/6)
A. period: ?; range: [-2, 2]
B. period: 2?; range: 
C. period: ?; range: [0, 2]
D. period: 2?; range: [-2, 2]
Solve the problem.The quadratic function 
models the median, or average, age, y, at which U.S. men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)
A. 1957, 23.2 years old B. 1954, 36 years old C. 1957, 50.2 years old D. 1936, 50.2 years old
Solve. Reduce the fraction in your answer.A company employs 288,000 employees worldwide. About 14,400 employees work in the United States. What fraction of the employees do NOT work in the United States?
A. 
B. 
C. 
D. 
Use an identity to write the expression as a single trigonometric function or as a single number.sin 
cos 
A. 
B. 
C. 
D. 