Use a half-angle formula to find the exact value of the expression.cos 
A. 
B. - 
C. - 
D. 
Answer: A
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Find the probability.A card is drawn at random from a well-shuffled deck of 52 cards. What is the probability of drawing a face card or a 5?
A. 
B. 16
C. 
D. 
Decide whether or not the functions are inverses of each other.f(x) = 2x - 7, g(x) = 
A. Yes B. No
Use Bayes' rule to find the indicated probability.Two shipments of components were received by a factory and stored in two separate bins. Shipment I has 2% of its contents defective, while shipment II has 5% of its contents defective. If it is equally likely an employee will go to either bin and select a component randomly, what is the probability that a defective component came from shipment II?
A. 0.714 B. 0.222 C. 0.5 D. 0.2
Decide if the expression is factored.3m - 7m2
A. No B. Yes