Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.Mr. Larsen's third grade class has 22 students, 12 girls and 10 boys. Two students must be selected at random to be in the fall play. What is the probability that no boys will be chosen? Order is not important.
A. 
B. 
C. 
D. 
Solve the problem.A right circular cylinder is obtained by revolving the region enclosed by the line x = r, the x-axis, and the line 
about the y-axis. Find the volume of the cylinder.
A. ?rh2 B. 2?r2h C. ?rh D. ?r2h
Solve the problem.Bengisu was pregnant 273 days and 264 days for her first two pregnancies. In order for Bengisu's average pregnancy to equal a national average of 267 days, how long must her third pregnancy last?
A. 268 days B. 242 days C. 264 days D. 269 days
Graph. Label any intercepts and determine the slope of the line. If the slope is undefined, state this.x = 6
A. x-intercept: (0, 6), m: 0
B. x-intercept: (0, 0), m: 6
C. x-intercept: (6, 0), m: undefined
D. x-intercept: (6, 0), m: 
