Simplify the expression.
A. -2
B. 2
C. -1
D. 1
Answer: A
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 42 ? 45
A. 262,144 B. 16,777,216 C. 16,384 D. 1,048,576
Evaluate the expression.(-10)2
A. 100 B. 20 C. -20 D. -100
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.4x - 3y + 5z = 7-8x - 2y + 3z = 37x + 3y - 2z = -10
A. 
B. 
C. 
D. No solution
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