Write exponential notation.x ? x ? x ? x
A. 4
B. x4
C. 4(x)
D. 4x
Answer: B
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Use the formula for 
to evaluate the expression.
A. 30,240 B. 5 C. 2 D. 252
Determine whether the relation defines y as a function of x. Give the domain.y = 
A. Function; domain: (-?, ?) B. Not a function; domain (-?, 11) ? (11, ?) C. Not a function; domain: (-?, ?) D. Function; domain (-?, -1) ? (-1, ?)
Find the center, foci, and asymptotes of the hyperbola.
- 
= 1
A. C: (0, 0); F: (0, -12), (0, 12); A: y = 
x, y = - x
B. C: (0, 0); F: (0, -12), (0, 12); A: y = 
x, y = - 
x
C. C: (0, 0); F: (-15, 0), (15, 0); A: y = 
x, y = - 
x
D. C: (0, 0); F: (-15, 0), (15, 0); A: y = 
x, y = - 
x
The following chart shows some figures from an income statement. Prepare a vertical analysis by expressing each item as a percent of net sales. Round percents to the nearest tenth of a percent.
A. 57.6%, 13.3%, 54.2%, 4.8% B. 57.6%, 13.5%, 12.5%, 8.3% C. 57.6%, 23.0%, 12.5%, 8.3% D. 57.6%, 13.3%, 7.2%, 4.8%