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The amplitude of the trigonometric function shown below is defined as the average of the absolute values of the maximum value of f(x) and the minimum value of f(x). The trigonometric function graphed below can be described by the equation f(x) = a sin(bx + c), where a, b, and c are real numbers. Which of the following values describes the amplitude of this function?

(A) 1

(B) 2

(C) 3

(D) π

(E) 2π

The Correct Answer

When x > 1, 3logxx-2 = ?

(A)-6 (B) - (C) (D) 1 (E)

Correct Answer: A

The table below shows the percents of U.S. citizens who had ever consumed a certain brand-name soda, out of all soda consumers, for each year from 1986 through 2006.


Which of the following years had the LEAST increase in the percent of U.S. citizens who had consumed the brand-name soda from the previous year?

(F) 1990 (G) 1998 (H) 2001 (J) 2004 (K) 2006

Correct Answer: G

If 30% of x equals 60% of y, which of the following expresses y in terms of x ?

(A)y = 33% of x (B) y = 50% of x (C) y = 66% of x (D) y = 150% of x (E) y = 200% of x

Correct Answer: B

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