Simplify the expression.
- 
? 
A. -1
B. - 
C. - 
D. - 
Answer: B
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Solve using the percentage formula.100% of what number is 19?
A. 1 B. 19 C. 100 D. 38
Translate the verbal expression into an equation and solve for x.-45 is the product of 5 and what number?
A. -45 = 5x; x = -9 B. -45 = 5 + x; x = 50 C. -45 = 5 + x; x = -50 D. -45 = -9x; x = 5
Write the expression as a single logarithm with coefficient 1. Assume all variables represent positive real numbers with 
and 
.
log3 (x6 )+ 
log3(x6 ) - 
log3 x
A. log3 (x7)
B. log3 (x26/9)
C. log3 (x9/2)
D. 
log3 (x12)
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