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Algebra I Practice Test --- Number and Operations (EOC Reporting Category 2) 2 , which expression is 3 3x 2 13x 10 equivalent to ? 9 x 2 12 x 4 1. If x ≠ A. B. C. D. 3x – 2 x+5 –6x2 + x – 6 –6x2 + 25x – 14 2. Which set of numbers is ordered from greatest to least? 15 9 , 5, , 2.49 7 5 15 9 , , 5, 2.49 B. 7 5 15 9 C. 2.49, 5, , 7 5 9 15 D. 2.49, 5, , 5 7 A. 3. A cubic millimeter of human blood contains about 5 x 106 red blood cells. An adult human body may contain about 5 x 106 cubic millimeters of blood. About how many red blood cells does such a human body contain? A. B. C. D. about 5 x 106 about 25 x 106 about 2.5 x 1012 about 2.5 x 1013 5. Which expression is equivalent to 15 x ? 15 A. x 15 x 15 15 x C. 15 D. x B. 6. What is the value of 49 16 ? 64 49 17 56 81 B. 56 33 C. 15 1377 D. 3136 A. 7. Which expression is closest to (7.08 x 10–7)(4.033 x 1029)? A. B. C. D. 1.76 x 1022 1.76 x 1023 2.86 x 1022 2.86 x 1023 8. Which statement best describes the values of the numbers in this set? 4. Which expression is equivalent to A. B. C. D. 2x 4 64 81 100 , , 15 19 23 6 ? 8x24 8x12 64x12 64x8 A. B. C. D. They are between 1 and 1.5. They are between 1.5 and 2. They are between 2 and 2.5. They are between 2.5 and 3. 9. If the value of the variable y is positive, what is the sum of 3 7y and 7y ? A. 3 7y B. 4 7 y C. 3 14y D. 4 14y 10. The mass of the Sun is estimated to be about 1.99 x 1030 kg, and the mass of Jupiter is estimated to be about 1.90 x 1027 kg. About how many times heavier than Jupiter is the Sun? A. B. C. D. about 2 times about 10 times about 100 times about 1,000 times 11. Which list shows the numbers arranged from least to greatest? 7, 2.074, 2.1, 11 5 B. 2.074, 7, 2.1, 11 5 A. C. 2.074, 2.1, 11 , 7 5 D. 2.074, 2.1, 7, 11 5