Identify the following as rational or irrational. If the number is rational, find the root exactly. If the number is irrational, approximate the number to the nearest thousandth when necessary.
A. Irrational, 12.782
B. Rational, 12.754
C. Rational, 12
D. Irrational, 12.767
Answer: D
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Solve the problem. Assume all data are accurate to two significant digits unless greater accuracy is given.Two pieces of equipment were purchased for a total of $2000. If one piece cost $810 more than the other, find the price of the less expensive piece of equipment.
A. $600 B. $595 C. $1400 D. $1405
Sketch the graph of y = -1 - cosx over one period.
What will be an ideal response?
Solve the rational inequality. Express the solution in interval notation.
< x
A. (-?, -5) ? (0, ?) B. (-?, -5) ? (-2, 0) C. (-?, 2) ? (5, ?) D. (-5, -2) ? (0, ?)
Find an equation of a polynomial function of least degree having the given complex zeros, intercepts, and graph.f(x) has complex zero 5i
A. f(x) = 
(x2 - 25)
B. f(x) = 
(x2 + 25)
C. f(x) = 
(x2 + 25)
D. f(x) = 
(x2 + 5)