1. Insert parentheses to make the equation 9 + 6 × 2 ÷ 3 – 1 = 12 true. A. 9 + 6 × 2 ÷ (3 - 1) = 12 B. (9 + 6) × 2 ÷ 3 - 1 = 12 C. 9 + (6 × 2) ÷ 3 - 1 = 12 D. (9 + 6 × 2) ÷ 3 - 1 = 12 Hint 2. What is the value of 3s(t +11) - 6r if r = 21, s = 9, and t = 11? A. 531 B. 480 C. 468 D. 175 Hint 3. Evaluate i + (j + k) if i = 14, j = 8, and k = 16. A. 50 B. 38 C. 42 D. 28 Hint 4. A mathematical sentence like b - 432 = 197 is called a(n) ______. A. variable B. solution C. evaluation D. equation Hint 5. Two numbers grouped together like (2, 5) are called ______. A. y-coordinates B. x-coordinates C. an ordered pair D. a coordinate system Hint 6. Name the ordered pair for point A. A. (4, 1) B. (4, 2) C. (2, 4) D. (1, 4) Hint 7. Translate ''a product of a number and seven is 49'' into an equation. A. 49 B. x + 7 = 49 C. 7x = 49 D. x - 7 = 49 Hint 8. Which value for b makes the inequality true? A. none of these B. 6 C. 5 D. 7 Hint 9. What is the most popular computer use among the teens surveyed? A. games B. chat C. education D. homework Hint 10. The set of whole numbers and their opposites are known as ______. A. integers B. negative numbers C. absolute values D. positive numbers Hint 11. Simplify |–13| – |5|. A. –18 B. 18 C. 8 D. –8 Hint 12. Find an expression to compare |–7| and 7. A. |-7| 7 B. |–7| > 7 C. |–7| < 7 D. |–7| = 7 Hint 13. What is the sum of –32 and –16? A. 2 B. –2 C. –48 D. –16 Hint 14. Simplify the expression 12n + (-5n) + 3n. A. 10n B. 7n C. -20n D. -4n Hint 15. Solve the equation 6 + (–2) + (–8) = r. A. –16 B. –4 C. 0 D. 2 Hint 16. Find the difference of (–2) and 5. A. 3 B. –7 C. –3 D. 7 Hint 17. Simplify (-16c) - (-4c). A. -20c B. -12c C. 12c D. 20c Hint 18. Find the tenth term of the pattern 0, 1, 4, 9, 16, 25, 36, … . A. 49 B. 81 C. 100 D. 64 Hint 19. For the sequence 0, -1, 2, -3, 4, -5, …, what would you add to the 7th term to find the 8th term? A. 15 B. -9 C. -13 D. 11 Hint 20. Solve d = (–3)(–12). A. 36 B. –36 C. 4 D. –4 Hint