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# Pre-Cal 20S January 23, 2009

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Review of radicals and rational expressions and equations.

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### Pre-Cal 20S January 23, 2009

1. 1. Exam Rehearsal exams clime by ﬂickr user Sara >>Morning Star<<
2. 2. Which of the following statements are true? I. A whole number is an integer. II. A rational number is a real number. III. A repeating decimal is an IV. A rational number can be irrational number. expressed as a fraction. (a) I, II, and III only (b) I, II and IV only (c) I, III, and IV only (d) I, II, III and IV
3. 3. The Japanese game of Tai Shogi is an expanded version of chess. Like chess, it is played on a square board covered with small squares. If each small square has a side length of 2 cm, the diagonal of the whole board measures cm. How many squares are on the board?
4. 4. RATIONAL EXPRESSIONS & EQUATIONS
5. 5. A bus and a car leave the same place and traveled in opposite directions. If the bus is traveling at 50 mph and the car is traveling at 55 mph, in how many hours will they be 210 miles apart?