Identify which of these types of sampling is used: simple random, stratified, systematic, or convenience.A market researcher randomly selects 500 drivers under 30 years of age and 500 drivers over 30 years of age.
A. Simple random
B. Stratified
C. Systematic
D. Convenience
Answer: B
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Solve the problem.Find the point on the sphere 
that is farthest from the point 
A. 
B. 
C. 
D. 
Use a number line to find the sum.4 + (-5)
A. 9 B. -1 C. 1 D. -9
Use the distributive property to simplify.-4(5m - 9)
A. -20m + 36 B. -20m - 36 C. 36m - 20 D. -36m + 20
Sketch a graph to represent the situation described.Janice jogged twice around a circular race track, which took her 4 minutes, then jogged to the center of the track and rested for 4 minutes before walking home slowly at a constant rate, which took her 12 minutes. Sketch a graph of her distance from the center of the race track as a function of time. Assume that the route she takes home is a straight line from the center of the race track.
A. 
B. 
C. 
D. 