Find the domain and range of the function graphed.
A. domain: (-?, -2) ? (-2, ?); range: (-?, 4) ? (4, ?)
B. domain: (-?, ?); range: (-?, ?)
C. domain: (-?, -2]; range: (-?, 4]
D. domain: (-?, ?); range: (-?, 4]
Answer: D
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Factor the difference of squares.49x2 - 81
A. (7x + 9)2 B. (7x + 9)(7x - 9) C. (7x - 9)2 D. Prime
Evaluate.Let log b A = 2.349 and log b B = 0.17. Find log b 
.
A. 2.179 B. 2.519 C. 2.349 D. 0.399
Solve the problem.If (2, -3) is the endpoint of a line segment, and (3, 1) is its midpoint, find the other endpoint.
A. (4, 5) B. (4, -7) C. (10, -1) D. (0, -11)
Personal taxes. Suppose that the percent of total personal income that is used to pay personal taxes is given by y = 0.034x² - 0.044x + 12.642, where x is the number of years past 1990 (Source: Bureau of Economic Analysis, U.S. Department of Commerce). Find the year or years when the percent of total personal income used to pay personal taxes is 16 percent.
a. 2011 b. 2001 c. 1999 d. 2038 e. 2006