Solve the trigonometric equation symbolically, graphically, or numerically for 
2 cos2 ? - cos ? = 0
A. ? = 30°, 90°, 270°, 330°
B. ? = 60°, 90°, 270°, 300°
C. ? = 0°, 60°, 180°, 300°
D. ? = 0°, 180°
Answer: B
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The number of sales calls made by certain employees during a special time span are given. 141, 137, 136, 135, 134, 132, 131, 130, 130, 130, 126, 125, 125, 124, 124, 122, 122, 121, 121, 119.Find the inner-quartile range for the set of sales calls.
A. 10 B. 6 C. 22 D. 11
Let f(x) = x² - 18x + 75 and g(x) =  FIGURE 1.png)
Find  Figure 2.png)
What will be an ideal response?
Find the Social Security tax and Medicare tax on the annual gross income of a self-employed individual. For a self-employed person, the FICA rate is 12.4% and the Medicare rate is 2.9%. Round to the nearest cent if needed.Ted Houston, accountant, earned $56,641.08
A. $3,511.75, $821.30 B. $3,511.75, $1,642.59 C. $6,923.49, $1,542.59 D. $7,023.49, $1,642.59
Solve the problem.A grocery store normally sells 6 jars of caviar per week. Use the Poisson Distribution 
to find the probability (to three decimals) of selling 8 jars in a week. 
A. 65.052 B. 0.103 C. 0.826 D. 0.207