Solve the problem.The perimeter of a rectangular room is 42 ft. The width is 7 ft. Find the length.
A. 15 ft
B. 13 ft
C. 14 ft
D. 35 ft
Answer: C
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Choose the equivalent expression for the given expression.sec2x
A. 1 - csc2x B. 1 - tan2x C. 1 + cot2x D. 1 + tan2x
Solve the problem.A class of sixth grade students kept accurate records on the amount of time they spent playing video games during a 
period. The times (in hours) are listed below:
Determine what times are outliers.
A. 9.7 B. No outliers are present. C. 21.6, 9.7 D. 21.6
Solve the problem.Suppose that a family has 5 children and that the probability of having a girl is 
. What is the probability of having at least three boys?
A. 0.1563 B. 0.3125 C. 0.4688 D. 0.5000
Solve the problem.The price p and the quantity x sold of a certain product obey the demand equation: 
What is the revenue to the nearest dollar when 400 units are sold?
A. $13,333 B. $20,000 C. $100,000 D. $66,667