Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.x-9 x5
A. - 
B. 
C. x4
D. -x4
Answer: B
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Draw the graph of the equation.x = y2 - 2y + 3 
A. 
B. 
C. 
D. 
Solve the problem.Regrind, Inc. regrinds used typewriter platens. The variable cost per platen is $1.90. The total cost to regrind 100 platens is $300. Find the linear cost function to regrind platens. If reground platens sell for $9.50 each, how many must be reground and sold to break even?
A. C(x) = 1.90x + 110; 10 platens B. C(x) = 1.90x + 110; 15 platens C. C(x) = 1.90x + 300; 40 platens D. C(x) = 1.90x + 300; 27 platens
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
Determine whether the ordered pair is a solution for the equation.(4, 7); x - y = 16;
A. Yes B. No