What is the domain of f(x)? What is its range?f(x) = 
+ 3
A. Domain: (-?, 1) ? (1, ?); range: (-?, 0)
B. Domain: (-?, -1) ? (-1, ?); range: (-?, 3)
C. Domain: (-?, 1) ? (1, ?); range: ( 3, ?)
D. Domain: (-?, 1) ? (1, ?); range: (-?, 3)
Answer: D
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and 
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Express the given vector as a linear combination of the unit vectors i and j.
A. 5i + 5j B. 3i + j C. -5i + 5j D. i + 3j
Fill in the blank with the appropriate answer.Trigonometric functions describe the properties of _______________ triangles.
Fill in the blank(s) with the appropriate word(s).
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A. (-3, 0), (0, -1), (0, 1), (3, 0) B. (-1, 0), (0, -3), (0, 3), (1, 0) C. (-1, 0), (0, -9), (0, 9), (1, 0) D. (-9, 0), (0, -1), (0, 1), (9, 0)