1. On a coordinate system, the vertical number line is called the _____. A. coordinate axis B. plane axis C. x-axis D. y-axis Hint 2. The slope of a line is ______. A. the ratio of the vertical change to the horizontal change B. the distance of the line from the y-axis C. the ratio of the horizontal change to the vertical change D. the distance of the line from the x-axis Hint 3. Children in grades one through six are measured for their height. A scatter plot is drawn where the ordered pairs are (grade, height). Which statement will be true? A. The graph will show no relationship between the variables. B. The graph will show a negative relationship between the variables. C. The graph will show a positive relationship between the variables. D. If a line was drawn approximately through the points, a vertical line would result. Hint 4. In the expression 25, 5 is called the _____. A. square root B. perfect square C. exponent D. base Hint 5. The expression 3 · 3 · 3 · 3 can be written using exponents as _____. A. 3(4) B. 34 C. 4(3) D. 43 Hint 6. The expression 5 can be written using exponents as _____. A. 1(5) B. 15 C. 51 D. 50 Hint 7. A number, a variable, or a product of numbers and variables that have only positive exponents, such as the expression 6x2, is called a ________. A. polynomial B. binomial C. trinomial D. monomial Hint 8. The sum of one or more monomials is called a ______. A. polynomial B. multinomial C. trinomial D. binomial Hint 9. Find the difference (4 - 7a2) - (-a + 2a2 - 1). A. -9a2 + a + 5 B. -9a2 + a + 3 C. -5a2 + a + 5 D. -5a2 - a + 3 Hint 10. Write a verbal expression for 7n + 12 – 3. A. three times a number plus seven minus twelve B. three plus seven times a number times twelve plus eight C. seven times three plus a number minus twelve D. seven times a number plus twelve minus three Hint 11. Use the distributive property to rewrite the expression 7c + 21d + 14e. A. 7(c + 3d + 2e) B. 7(c + 21d + 14e) C. 7c + 14(2d + 3) D. 5(c + 7d + 3e) Hint 12. Raul spent \$30.00 in a period of 6 days. What was the average change in the amount of money he had each day? A. \$36.00 B. -\$36.00 C. \$5.00 D. -\$5.00 Hint 13. Which sentence is not a true sentence? A. -15(8) < -16(-2) B. > C. 12(-4) > -13(4) D. > Hint 14. Solve |r| + 9 = 14. A. -23 or 23 B. 5 C. 23 D. -5 or 5 Hint 15. Beth wants to buy her brother a birthday present. She has \$27 that she wants to spend on the gift. She decides to go to the mall to buy him some CD's. If the CD's are all on sale for \$5.99 (after tax), and she can have all of them gift-wrapped for a flat rate of \$3.00, how many CD's can she buy and have gift-wrapped? A. 4 CD's B. 6 CD's C. 5CD's D. 7 CD's Hint 16. Refer to the graph. Determine the range. A. {1982, 1983,1984,1985, 1986, 1987, 1988,1989, 1990, 1991} B. {1984, 1985, 1986, 1987, 1988, 1990, 1993, 1995, 1997, 1999} C. {2.1, 2.6, 2.7, 3.0, 3.0, 3.7, 4.3, 4.5, 5.4, 5.0} D. {3.1, 3.2, 3.4, 3.6, 3.6, 3.7, 4.3, 4.5, 4.7, 4.8} Hint 17. If f(x) = 4x – 3, find f(j + 2). A. 4j + 11 B. 4j + 5 C. 4j – 3 D. 4j – 1 Hint 18. Write 4-8 using positive exponents. A. B. C. 84 D. 48 Hint 19. Simplify the expression . A. 27 B. 9 C. 3 D. 8 Hint 20. Find the length of the leg of the right triangle. A. 12.5 cm B. 5 cm C. 4 cm D. 17.7 cm Hint