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 What is the domain of the function f (x) = 

(A) {x | x ≠ 0}

(B) Ø

(C) all real numbers

(D) {x | x ≠ 3}

(E) {x | x ≠ 4 and x ≠ 1}

The Correct Answer

Rebecca is trying to schedule volunteers to help at a school carnival. There are 5 one-hour shifts to be filled by 5 different volunteers. If each shift must have one and only one volunteer, how many different arrangements can the schedule have?

(A)5 (B) 20 (C) 25 (D) 50 (E) 120

Correct Answer: E

The expression is equivalent to:

(A)5y4 (B) 5y6 (C) 5y8 (D) 16y4 (E) 16y6

Correct Answer: B

The geometric mean of 3 positive numbers is the cube root of the product of the 3 numbers. What is the geometric mean of 2, 4, and 27?

(A) 6 (B) 11 (C) 21 (D) 72 (E) 216

Correct Answer: A

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