Translate the problem to a system of equations, then solve using matrices.Jill is 
away from Joe. Both begin to walk toward each other at the same time. Jill walks at 
per hour. If they meet in 3 hours, how fast is Joe walking?
A. 4 km per hour
B. 1.5 km per hour
C. 3 km per hour
D. 2 km per hour
Answer: D
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Evaluate.
A. 
B. 0
C. 
D. 
Multiply using the rules for special products.(2p + 9)(2p - 9)
A. 4p2 + 36p - 81 B. p2 - 81 C. 4p2 - 36p - 81 D. 4p2 - 81
Determine whether y ? ? or y ? -? as x ? -? and x ? ?.y = -7x2 + 7x3 + 6x - 4
A. y ? -? as x ? -?; y ?- ? as x ? ? B. y ? -? as x ? -?; y ? ? as x ? ? C. y ? ? as x ? -?; y ? -? as x ? ? D. y ? ? as x ? -?; y ? ? as x ? ?
Use Bayes' rule to find the indicated probability.Quality Motors has three plants. Plant 1 produces 35% of the car output, plant 2 produces 20% and plant 3 produces the remaining 45%. One percent of the output of plant 1 is defective, 1.8% of the output of plant 2 is defective and 2% of the output of plant 3 is defective. The annual total production of Quality Motors is 1,000,000 cars. A car chosen at random from the annual output and is found defection. What is the probability that it came from plant 2?
A. 0.35 B. 0.559 C. 0.224 D. 0.217