Algebra 1st Nine Weeks Test Review NAME___________________ 1. The number 50 can be best classified as which type of number? 2. A number is multiplied by 4, and the product is added to 8. The result is 40. Find the number. 3. If x = 0, which of these expressions has a value of 0? A. ( x + 4) 4+5 B. (x – 6)(1+5) C. x (3 + 1 - 4) D. x + (34 – 4) 4. Simplify: –(5y – 9) + 3y 5. Evaluate this expression? 42 72 6. Write the expression that represents, “The square of the difference of 10 and a number”? 7. What value of x makes the equation 5x – 3 = 12 true? A. 2 B. 3 C. 4 D. 5 8. Evaluate the following expression if a = 5, b = 8, c = –3 a(b – 5)2 9. Write an algebraic expression for the sum of the square of a number and 6 10. Which subset of the real number system best classifies the number ( 0 ) 11. Evaluate 8(5 + 3 1) (2 6 – 7) 12. What value for x makes the following equation true? 4(2x –1 ) = –10(x – 5) A. 2 B. 3 C. 4 D. 5 13. What is the simplest form of 4x + 5y – 3(2x – 2y)? 14. What is the value of -30 + (-25) + 57 + (-4)? 15. Which property best describes the following algebraic sentence? 125 + (15 –10) = 125 + 5 A. reflexive property B. transitive property C. substitution property D. symmetric property 16. Evaluate the following expression using the given values. x= 6 x(8 – 3y) + 4z y = 1/2 and z = 2/3 17. Which property best describes the following algebraic sentence? –5(ab + 8) = –5(ba + 8) 18. Simplify the following algebraic expression. 2(2x – 5) + 6(–9 – 2x) – (–5) 19. Which property best describes the following algebraic sentence? 3z2 – 2z2 = (3 – 2)z2 20. Which property best describes the following algebraic sentence? 15 – 9 = 15 – 9 21. Which property best describes the following algebraic sentence? 6(ab + 5) = 6(5 + ab) 22. Use the order of operations to evaluate the following expression. [17 – (7 + 1)] 3 23. Evaluate the following expression if x = 2, y = 6, z = –4 (2xy)/(z) 24. What is the solution to the equation n – 83 = –51? 25. What is the solution to –3x = 7.5? 26. The formula for the area of a trapezoid (A) with its height (h) and bases (b and B) is: 1 A (b B)( h) 2 b h B What is the area of the trapezoid whose height (h) is 6 cm and whose bases are 7 cm (b) and 9 cm (B)? 5 3 w x 11 13 27. What are the missing values? 2 2 6 y z 18 8 x 8 18 2 28. The matrix is multiplied by a scalar, and the resulting matrix is is formed. 6 9 y 2.25 Find the scalar and the missing values of x and y. 29. Solve and graph 5x – (3x – 1) < 4x – 2(4x – 3) 30. What is the sum and product of the solutions to 2 3x 1 2 24 ? 31. What is the sum and product of the solutions to the equation 3x 1 5 7? 32. Solve and graph the inequality 3 2 x 4 27 . 33. What is the inequality that represents the following number line: –8 2 34. The OHS football team is averaging 28 points per game. The last three games, the team has scored within 8 points of their average. Write an inequality that represents the number of points the team has possibly scored in their last three games. 35. If f(x) = 3x2 + 2x – 5, find f(–2). 36. Find the range of the function f(x) = x4 if the domain is {–4, 0, 8}. 2 37. Find the domain of the function g ( x) 2 x 4 if the range is {–10, 0, 6}. 3 38. What is the domain and range of the following graph? 39. Which of the following graph(s) is/are functions?