Solve the problem.Two pumps can fill a water tank in 45 minutes when working together. Alone, the second pump takes 3 times longer than the first to fill the tank. How long does it take the first pump alone to fill the tank?
Fill in the blank(s) with the appropriate word(s).
60 min
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Add the numbers using the number line.3 + (-4) 
A. -7 B. -1 C. 7 D. 1
Solve the equation.30c3 - 10c2 - 20c = 0
A. 
B. {0}
C. 
D. 
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
Solve the equation.12r2 = 3r
A. {0}
B. {0, 4}
C. 
D. 