Solve the problem.The area of a rectangle is 15m2 + 5m - 10. Find the length if the width is 3m - 2.
A. 15m + 5
B. 15m - 5
C. 5m - 5
D. 5m + 5
Answer: D
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Express the number as a power of 10.1,000,000,000
A. 109 B. 108 C. 1010 D. 1011
Use the table to determine if f is one-to-one. If so, use the table for f(x) to find a table for f-1(x).
A. Not a one-to-one function
B. 
C. 
D. 
Find the domain of the expression.
A. all real numbers
B. 
C. 
D. 
Use the frequency distribution to find the mean and the sample standard deviation. Does the data form a normal distribution? Remember: if the data fall within 2% of the empirical rule of 68%, 95%, and 99.7% for one, two, or three standard deviations, respectively, they form a normal distribution. Shipment time (hours)Frequency f23.5 - 28.51928.5 - 33.541733.5 - 38.578938.5 - 43.569843.5 - 48.550448.5 - 53.542
A. The mean is 45 hours. The sample standard deviation is 5 hours. The data doesn't form a normal distribution. B. The mean is 39 hours. The sample standard deviation is 5 hours. The data doesn't form a normal distribution. C. The mean is 39 hours. The sample standard deviation is 5 hours. The data forms a normal distribution. D. The mean is 35 hours. The sample standard deviation is 5 hours. The data doesn't form a normal distribution. E. The mean is 45 hours. The sample standard deviation is 5 hours. The data forms a normal distribution.