Find the vertices and graph the hyperbola.16x2 - y2 = 64
A. (-2, 0), (2, 0)
B. (0, -8), (0, 8)
C. (-8, 0), (8, 0)
D. (-2, 0), (2, 0)
Answer: A
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Find the mean. If necessary, round to one decimal place.15, 10, 4, 9, 4, 4, 5
A. 8.5 B. 6.8 C. 8.8 D. 7.3
Find the probability.The age distribution of students at a community college is given below. Age (years)Number of students (f)
1106?A student from the community college is selected at random. Find the probability that the student is at least 31. Round your answer to three decimal places.
A. 0.925 B. 0.053 C. 0.075 D. 83
Solve using the quadratic formula. Write the solution set using interval notation.4x2 - 12x + 2 ? 0
A. 
B. 
C. 
? 
D. 
? 
Solve.Peter went shopping for CDs with $100 in his wallet. He bought two CDs for $7.99 each, three for $11.99 each, and one for $14.99. Sales tax was included in the prices. After paying cash for the purchases, how much did he have left from the $100?
A. $66.94 B. $31.26 C. $36.26 D. $33.06