120 Chapter 2 Integers and Algebraic Expressions Concept 1: Order of Operations For Exercises 9–56, simplify using the order of operations. (See Examples 1–4.) 9. 1 5 8 3 10. 2 6 3 10 11. 112152182132 12. 1221621321102 13. 5 213 52 14. 6 418 102 15. 213 62 10 16. 411 32 8 17. 8 62 18. 10 52 19. 120 142152 20. 36 122132 21. 40 32 142122 22. 48 36 162122 23. 100 213 82 24. 55 312 62 25. 26. 010 13 0 06 0 04 9 0 010 0 27. 28. 29. 52 1322 2100 36 3216 236 11 229 30. 62 1422 31. 3 215 922 32. 5 418 1022 33. 12 114 1622 142 34. 7 11 522 4 35. 48 12 122 36. 100 152 152 37. 90 132 112 162 38. 64 142 2 1162 39. 372 924 15 12 40. 31822 52 4 14 12 41. 2 22 10 12 42. 14 42 2 10 43. 44. 45. 46. 47. 010 50 0 62 1422 48. 49. 21 34 15 824 50. 15 310 120 2524 51. 17 2318 1324 52. 8 5145 152 53. 4 239 14 1224 54. 13 3311 115 1024 55. 36 12) 6(32 2 56. 48 14) 2(52 2 Concept 2: Translations Involving Variables 57. Carolyn sells homemade candles. Write an expression for her total revenue if she sells x candles for $15 each. (See Example 5.) 58. Maria needs to buy 12 wine glasses. Write an expression of the cost of 12 glasses at p dollars each. 59. Jonathan is 4 in. taller than his brother. Write an expression for Jonathan’s height if his brother is t inches tall. (See Example 5.) 60. It takes Perry 1 hr longer than David to mow the lawn. If it takes David h hours to mow the lawn, write an expression for the amount of time it takes Perry to mow the lawn. 61. A sedan travels 6 mph slower than a sports car. Write an expression for the speed of the sedan if the sports car travels v mph. 023 7 0 52 1322 10 132 152 9 42 13 122 142 1 22 8 1222 5 112 32 27 9 6
miller_prealgebra_2e_ch1_3
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