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
Mathematics
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)
Mathematics
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
Mathematics
Find the square root. When necessary, round to nearest thousandth.
A. 589.000 B. 24.266 C. 24.269 D. 24.274
Mathematics