Identify and graph the conic section. Label the center and/or vertex as appropriate.
- 
= 1
A. hyperbola; center (0, 0);
(-
, 0), (
, 0)
B. hyperbola; center (0, 0);
(-2, 0), (2, 0)
C. ellipse; center (0, 0)
(-
, 0), (
, 0), (0, -2), (0, 2)
D. hyperbola; center (0, 0);
(0, -
), (0, 
)
Answer: A
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A. f(x) = x2 - 9x
B. f(x) = x2 - 9x + 2
C. f(x) = 
- 9x + 
D. f(x) = 
- 9x + 
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Fill in the blank(s) with the appropriate word(s).
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A. {x|-25 ? x ? 25} B. {x|x ? 0} C. all real numbers D. {x|-20 ? x ? 27.5}
Solve the problem.Suppose that P(x) represents the percentage of income spent on housing in year x and I(x) represents income in year x. Determine a function H that represents total housing expenditures in year x.
A. H(x) = (I - P)(x)
B. H(x) = (
)(x)
C. H(x) = (P ? I)(x)
D. H(x) = (P + I)(x)