Solve.Given that sin ? = 0.7821 and that ? is in quadrant I, find sin 2?.
A. sin 2? = 0.9747
B. sin 2? = -0.8773
C. sin 2? = 0.926
D. sin 2? = 1.0722
Answer: A
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the x-axis. Use the method of disks.y = 
, y = 0, x = 0, x = 6
A. 3? B. 12? C. 18? D. 6?
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
Indicate whether the statement is true always, sometimes, or never.A complex number is an imaginary number.
A. Always B. Sometimes C. Never
Find the slope of the line. 
A. 5 B. 1 C. -5 D. -1