Describe the natural domain of the function. f(x) = x2 + 4
A. {x|x ? -4}, or [-4, ?)
B. {x|x ? -4}, or (-?, -4) ? (-4, ?)
C. all real numbers, or (-?, ?)
D. {x|x > -4}, or (-4, ?)
Answer: C
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Find a polynomial function of lowest degree with rational coefficients that has the given numbers as some of its zeros.-
, -2i
A. f(x) = x4 - 45x2 - 28 B. f(x) = x4 + 3x2 - 28 C. f(x) = x4 + 3x2 + 14 D. f(x) = x4 - 3x2 - 28
Use absolute value notation to describe the situation. The distance between u and -5 is no less than 9.
A. |u? - 5| ? 9 B. |u? - 5| ? 9 C. |u? - 5| < 9 D. |u + 5| > 9 E. |u + 5| ? 9
Evaluate the expression using the order of operations.-8 + 6 ? 9
A. 62 B. 432 C. 6 D. 46
Perform the indicated operation.12 gal 1 pt - 1 pt 4 fl oz
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