DIRECTIONS: Solve each problem, then select the best answer from the four choices given. You may use a calculator on every question, though some problems are designed to be solved more quickly without one.

Unless a question states otherwise, assume the following: illustrative figures are not necessarily drawn to scale; geometric figures lie in a plane; the word "line" indicates a straight line; and the word "average" indicates the arithmetic mean.

You may answer the 45 questions in any order — use the question navigator at the bottom of the screen to jump between items, flag questions to revisit, and review your progress before submitting.