By graphing the function, visually estimate its domain and range.g(x) = x2 - 1

A. Domain: [1, ?); range: (-?, ?)
B. Domain: (-?, ?); range :[-1, ?)
C. Domain: (-?, ?); range: (-?, ?)
D. Domain: [1, ?); range: [1, ?)


Answer: B

Mathematics

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Express the number in decimal notation.8.1 × 105

A. 81,000 B. 8,100,000 C. 405 D. 810,000

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Find the coordinates of the vertex for the parabola defined by the given quadratic function.f(x) = (x + 4)2 + 8

A. (-8, 4) B. (-4, 8) C. (8, -16) D. (8, -4)

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Solve the problem.Find the length, L, of the lake. Assume that the two triangles are similar. 

A. 4900 m B. 210 m C. 350 m D. 23.3 m

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Find the square root. When necessary, round to nearest thousandth.

A. 589.000 B. 24.266 C. 24.269 D. 24.274

Mathematics