Find the domain of the function.f(x) = 
A. {x|x > 
}, or (
, ?)
B. {x|x ? 2}, or (-?, 2]
C. all real numbers, or (-?, ?)
D. {x|x ? 2}, or (-?, 2) ? (2, ?)
Answer: B
Mathematics
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Provide an appropriate response.Correct and explain the error that a student made when he added 0.11 + 1 + 50.1 this way: 
5 2.2
What will be an ideal response?
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Use I = Prt for simple interest to find the indicated quantity.P = $3000; t = 90 days; I = $105. Find r. (Use 360 days in a year.)
A. 3.5% B. 14.0% C. 9.7% D. 14.2%
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Factor the trinomial, or state that the trinomial is prime.7x2 + 31x + 20
A. (7x + 5)(x - 4) B. (7x - 4)(x + 5) C. prime D. (7x + 4)(x - 5)
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Find the sum or difference. Write the answer in standard form, a + bi.(8 + 3i) - [(8 + 8i) + (3 - 3i)]
A. 19 - 2i B. -3 - 2i C. -3 + 8i D. 19 + 8i
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