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For Exercises 47-54, write an expression in words that describes the set of numbers given by each interval. (Answers may vary.) 47. (-00, -4) 48. [2, 00) 2049. (-2, 7] 50. (-3.9, 0) 51. [-180, 90] 52. (3.2, 00) 53. (-00, 00) 54. (-00, -1] Concept 4: Translations Involving Inequalities For Exercises 55-64, write the expressions as an inequality. (See Example 6.) 55. The age, a, to get in to see a certain movie is at 56. Winston is a cat that was picked up at the Humane least 18 years old. Society. His age, a, at the time was no more than 2 years. 57. The cost, c, to have dinner at Jack's Cafe is at 58. The number of hours, h, that Katlyn spent studying was most $25. no less than 40. 59. The wind speed, s, for an F-5 tornado is no less 60. The high temperature, t, for a certain December day in than 261 mph. Albany is at most 26.F. 61. After a summer drought, the total rainfall, r. for 62. Jessica works for a networking firm. Her salary, s, is at June, July, and August was no more than 4.5 in. least $85,000 per year. 63. To play in a certain division of a tennis tournament, 64. The average age, a, of students at Central Community a player's age, a, must be at least 18 years but not College is estimated to be between 25 years and more than 25 years. 29 years. I 16 Chapter R Review of Basic Algebraic Concepts The following chart defines the ranges for normal blood pressure, high normal blood pressure, and high blood pressure (hypertension). All values are measured in millimeters of mercury (mm Hg). (Source: American Heart Association.) Normal Systolic less than 130 Diastolic less than 85 High normal Systolic 130-139, inclusive Diastolic 85-89, inclusive Hypertension Systolic 140 or greater Diastolic 90 or greater For Exercises 65-68, write an inequality using the variable p that represents each condition. 65. Normal systolic blood pressure 66. Diastolic pressure in hypertension 67. High normal range for systolic pressure 68. Systolic pressure in hypertension A PH scale determines whether a solution is acidic or alkaline. The pH scale runs from 0 to 14, with 0 being the most acidic and 14 being the most alkaline. A pH of 7 is neutral (distilled water has a pH of 7). For Exercises 69-72, write the pH ranges as inequalities and label the substances as acidic or alkaline. 69. Lemon juice: 2.2 through 2.4, inclusive 70. Eggs: 7.6 through 8.0, inclusive 71. Carbonated soft drinks: 3.0 through 3.5, inclusive 72. Milk: 6.6 through 6.9, inclusive