093 Final Review 2 Solve the following equations or inequalities: 13 1 1 1. 2. 8x 5 x 3 20 x 10 3 3. 3 2x 19 4x 4. The sum of three consecutive even integers is 234. Find the integers. Simplify the following: 5. 2xy 4 5 6. Multiply and simplify completely, if possible: x 3 x 2 3x 1 7. 8. 9. Subtract and combine like terms: 3xy 2 x2 y 2 6 x 2 5x 2 y 3x 2 y 2 6 x 2 10. Add: 11. Divide: 7x 3 5x2 3 8x2 4 x 9 18x y 3 3 9 2 x 1 2 x 1 35 x 30 10 x 2 14. x2 8x 3x 2 7 x 4 Solve the following for x: x 2 x 72 0 16. 18. 5 36 x3 y 5 9 x3 y 4 9 x3 y 4 Factor the following completely: x2 4 x 3 12. 13. 15. x 2 x 2 17. List all numbers for which x x 3 54 x 2 4 x 21 is undefined x 2 3x 18 For the following, performed the indicated operation and simplify, if possible: x 12 x 11 x 2 64 6 x x 2 49 7 x 19. 20. 21. x5 5 x 4x 8 x 2x 38 x 22. Is 2, 3 a solution to: 2 x 5 y 10? 093 Final Review 2 Graph the following and label at least two points on your graph: 1 y x 1 5 x 3 y 15 23. 24. 3 25. Find the slope of the line that passes through the points (9, 7) and (5,4) 2 x 5 y 11 7 x 4 y 2 26. Is (–3, –1) a solution to the system of equations: 27. Solve by inspecting the slope and y-intercept, state the type of x y 5 system and number of solution: 3x y 7 Solve by any method, state the type of system and number of solution: 28. 2 x y 2 2 x 3 y 22 29. 1 2 x y 4 2 4 x y 12 31. x 3y 0 2 x 4 y 10 32. 2 x 3 y 11 4 x 6 y 13 2 x y 5 30. 3x 5 y 4 33. Tim has $16.30 in quarters and nickels. If he has 98 coins together, how many quarters and nickels does he have? 34. Henry invested $18,000 in two banks. He received $1080 in interest. How much did he invest in each bank if the first bank pays 5% interest and the second bank pays 7% interest? Simplify the following completely, assume all variables are positive: 35. 50 72 38. 35 x 4 y 2 21x 5 y 3 36. 6 7 37. 5 2 52 093 Final Review 2 Solve the following for x: 39. 4 x 7 15 42. x 5 x 1 40. x 3 2 1 41. x 5 2 43. Solve for x by completing the square only: x 2 8 x 13 0 44. Solve for x by using Quadratic formula: 45. Find the square roots of 9 x 2 4 x 2 5 2 093 Final Review 2 SOLUTIONS 1. x = 30 2. x 5 3 3. x 8 3 4. 76, 78, 80 5. 32 x 5 y 20 6. x 2 14 7. x 3 6 x 2 10 x 3 8. 4x 2 1 9. 3xy 5 x 2 y 2 5 x 2 y 10. 7 x 3 3x 2 4 x 6 11. 2 4y 1 y 12. x 3x 1 13. 52x 3x 2 14. xx 8 15. 3x 4x 1 16. x 9, x 8 17. x 6, x 9 18. x 3, x 6 19. 3 x 8 2 20. 19x 7 21. 2 x 23 x5 22. No 23. graph 24. graph 093 Final Review 2 3 4 25. m 26. No 27. one solution 28. 2, 6 29. No solution 30. 3, 1 31. (15, 5) 32. No solution 33. 57 quarters; 41 nickels 34. $9,000 @ 5%; $9,000 @ 7% 35. 5 6 42 36. 37. 1 38. 7 x 4 y 2 15xy 39. x = 16 40. x = 2, x = 4 41. x 5 7 42. x=4 43. x 4 3 44. x 2 2 45. 3 and -3