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Which of the following degree measures is equivalent to 2.25π radians?

(A) 101.25

(B) 202.5

(C) 405

(D) 810

(E) 1,620

Antoine bought a new electric guitar that cost $588.60 after 9% sales tax was added. What was the price of the guitar without tax?

(F) $536(G) $540(H) $542(J) $545(K) $548

Correct Answer: G

Two hoses attached to separate water sources are available to fill a cylindrical swimming pool. If both hoses are used, the time it will take to fill the pool can be represented by the following equation: , where T₁ and T₂ represent the time needed for hoses 1 and 2, respectively, to fill the pool on their own, and T_c represents the time needed for hoses 1 and 2 to fill the pool working together. If hose 1 alone can fill the pool in exactly 20 minutes and hose 2 alone can fill the pool in exactly 60 minutes, how many minutes will it take to fill the pool if both hoses work simultaneously?

(A) 3 (B) 10 (C) 15 (D) 18 (E) 40

Correct Answer: C

In the standard (x, y) coordinate plane, the center of a circle lies in quadrant III. If the circle is tangent to the x-axis and the y-axis, which of the following is an equation for the circle?

（A）(x + 4)² + (y + 4)² = 4 （B） (x - 4)² + (y - 4)² = 4 （C） x² + (y - 4)² = 16 （D） (x + 4)² + (y + 4)² = 16 （E） (x + 4)² + (y - 4)² = 16

Correct Answer: D