Find the domain of the function.f(x) = 
A. {x|x ? 3}, or (-?, 3) ? (3, ?)
B. all real numbers, or (-?, ?)
C. {x|x ? -5}, or (-?, -5) ? (-5, ?)
D. {x|x ? -5 and x ? 3}, or (-?, -5) ? (-5, 3) ? (3, ?)
Answer: D
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Solve the problem.Let u = 9i + j, v = i + j, and w = i - j. Find scalars a and b such that u = av + bw.
A. 9v + w B. 0.2000 v + 0.2500 w C. 9v - w D. 5.000 v + 4.000w
Write in scientific notation.0.000000093006
A. 9.3006 × 10-9 B. 9.3006 × 10-8 C. 9.3006 × 108 D. 9.3006 × 10-7
Answer the question.Which one of the following is the correct method for evaluating the expression 
A. 3 ? 72 - 5 = (21 - 5)2 = 16 = 256 B. 3 ? 72 - 5 = 3 ? 49 - 5 = 147 - 5 = 142 C. 3 ? 72 - 5 = 3 ? 22 = 3 ? 4 = 12 D. 3 ? 72 - 5 = 212 - 5 = 441 - 5 = 436
Write the expression in the standard form a + bi.(8 + 3i)(8 - 3i)
A. 64 - 9i2 B. 64 - 9i C. 73 D. 55