The graph of a function is given. Decide whether it is even, odd, or neither.
A. even
B. odd
C. neither
Answer: B
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Find the indicated measure of central tendency.Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week. Round your answer to two decimal places.6.70?6.70?7.30?9.00?6.50?6.706.90?7.30?7.20?6.70?9.00?8.107.40?6.70?6.70?8.20?6.50?6.90
A. 7.46 B. 6.87 C. 7.68 D. 7.25
Solve the problem.In a survey of 1000 Americans, 850 said that they own a cell phone. Assume that the survey was properly conducted and that the 1000 people surveyed represent an unbiased sample of the entire population. Compute a 99.7% confidence interval (expressed using percents) for this survey.
A. 84.08% to 85.02% B. 84.8% to 85.2% C. 83.9% to 86.1% D. 82.8% to 87.2% E. 81.7% to 88.3%
Find the exact value of the expression. Do not use a calculator.sec ?, if cos ? = 
A. 
B. 
C. 
D. 
Find the equation of the hyperbola satisfying the given conditions.Asymptotes y = 
x, y = - 
x; one vertex (10, 0)
A. 
- 
= 10
B. 
- 
= 1
C. 
- 
= 900
D. 
- 
= 1