Solve the equation.m-4 = 
A. 
B. {3}
C. {-3, 3}
D. {81}
Answer: C
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Use the formula for the nth term of a geometric sequence to find the indicated term of the sequence with the given first term, a, and common ratio, r.Find a5 when a = 4, r = 3.
A. 324 B. 81 C. 972 D. 48
Rewrite the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the trigonometric expression without the use of a calculator.2 sin 112.5° cos 112.5°
A. - 
B. 
C. 
D. - 
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
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