Find an equation for the graph.
A. y = -5 cos 
B. y = -5 cos (2x)
C. y = -5 sin 
D. y = -5 sin (2x)
Answer: B
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Evaluate the integral.
A. 74.6 B. 53.6 C. 6.70 D. 12.64
Solve the problem.Peter must practice the piano 
per week. He has already practiced 
How many more hours does he need to practice?
A. 7
hr
B. 1
hr
C. 6
hr
D. 1
hr
Provide an appropriate response.Why isn't 
x the same as 
?
What will be an ideal response?
Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275 B. 0.22 C. 0.5667 D. 0.7083