Simplify the expression.(-7x6yz8)2
A. -14x12yz16
B. -49x12y2z16
C. 49x12y2z16
D. 14x12yz16
Answer: C
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Provide an appropriate response.The "trapezoidal" sum can be calculated in terms of the left and right-hand sums as ? .
A. left-hand sum - right-hand sum
B. left-hand sum + right-hand sum
C. 
D. None of the above is correct.
Evaluate the polynomial for the given values of x and y.7x + 9y - 5; x = -2 and y = 4
A. 22 B. 10 C. 8 D. 17
Multiply.
A. x2 + 
B. x2 - 
x - 
C. x2 - 
x + 
D. x2 - 
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