Find the foci of the hyperbola.
- 
= 1
A. (- 4
, 0) and (4
, 0)
B. (-12, 0) and (12, 0)
C. (0, - 4
) and (0, 4
)
D. (0, -8) and (0, 8)
Answer: C
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Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.16 B. 4 C. 0.17 D. 0.33
Solve. Answer with a complete sentence.Find the area of a rectangle measuring 4.2 yards by 13.71 yards.
A. The area of the rectangle is 17.64 square yards. B. The area of the rectangle is 115.164 square yards. C. The area of the rectangle is 17.91 square yards. D. The area of the rectangle is 57.582 square yards.
Perform the operation and give the answer as a fraction in lowest terms.
A. - 
B. 
C. - 
D. - 
Use the figure to answer the question.The wages of the employees of a company are presented in this histogram. Assume that $6 is in the interval $6-$8, not $4-$6, similarly for $8, $10, and $12.
How many employees earn at least $12 and less than $14 an hour?
A. 46 B. 20 C. 16 D. 10