Solve.One pump can drain a pool in 12 minutes. When a second pump is also used, the pool only takes 11 minutes to drain. How long would it take the second pump to drain the pool if it were the only pump in use?
A. 131 minutes
B. 132 minutes
C. 5
minutes
D. 
minutes
Answer: B
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Provide an appropriate response.Suppose that the proportion of left handers in a certain population is 0.1 (10%). If samples of size 100 are repeatedly drawn from this population and the proportion of left handers in each sample is recorded, what can you say about the distribution of the sample proportions?
A. The sample proportions are approximately normally distributed with a mean of 0.1 and a standard deviation of approximately 1/10. B. The sample proportions are approximately normally distributed with a mean of 0.1 and a standard deviation of approximately 1/20. C. Each sample proportion will be equal to 0.1. D. The sample proportions are approximately uniformly distributed between the values of 0 and 0.2.
Solve the problem.Jamie is planning to start her own business. She has saved $1100 for this purpose. She estimates a cost of $880 for materials and $480 for advertising. By how much money is she falling short?
A. $700 B. $1500 C. $260 D. $2460
Convert the units.235 g = 
kg
A. 23,500 kg B. 0.0235 kg C. 0.235 kg D. 235,000 kg
Solve the equation.m(4m - 23) = -15
A. 
B. 
C. 
D. 