If the sequence is geometric, find the common ratio. If the sequence is not geometric, say so.1, -3, 9, -27, 81
A. -3
B. -4
C. 3
D. Not geometric
Answer: A
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Express the number in scientific notation.0.000462
A. 4.62 x 10-4 B. 4.62 x 10-3 C. 4.62 x 10-5 D. 4.62 x 104
Solve the problem.A movie theater has two screens and shows its movie continuously. A 30 minute documentary is shown on one screen. A 90 minute feature is shown on the other screen. If both movies begin at noon, how many minutes will pass before both movies begin again at the same time?
A. 120 minutes B. 90 minutes C. 10 minutes D. 180 minutes
Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Solve the problem. Simplify the fraction, if possible.In a math class containing 73 students, there are 13 freshmen, 8 sophomores, 12 juniors, and the rest are seniors. What fraction of the class is seniors?
A. 
B. 
C. 
D. 