Find the common ratio, r, for the geometric sequence.3, 9, 27, 81, 243, . . .
A. 1/3
B. 9
C. 3
D. 81
Answer: C
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250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 75 and standard deviation ? = 10.Carol scored 85 points on the exam. In approximately what percentile of the class does this score place her?
A. 84th percentile B. 95th percentile C. 34th percentile D. 68th percentile E. none of these
Use the circle graph to solve the problem.A survey of the 6,383 vehicles on the campus of State University yielded the following circle graph. 
Find the number of vans. Round your result to the nearest whole number.
A. 128 B. 5,936 C. 7 D. 447
Perform the indicated operation. Simplify the result if possible.8 yd 2 ft × 5
A. 43 yd 2 ft B. 11 yd 2 ft C. 43 yd 1 ft D. 49 yd 1 ft
For the given values, find the range.2417, 2476, 1648, 2039, 1205
A. 1271 B. 769 C. 828 D. 1212