Section 1.5 Subtraction of Real Numbers 61 Concept 3: Applications Involving Subtraction 71. On the game, Jeopardy, Jasper selected the category “The Last.” He got the first four questions correct (worth $200, $400, $600, and $800) but then missed the last question (worth $1000). Write an expression that determines Jasper’s score.Then simplify the expression to find his total winnings for that category. (See Example 4.) 72. On Courtney’s turn in Jeopardy, she chose the category “Birds of a Feather.” She already had $1200 when she selected a Double Jeopardy question. She wagered $500 but guessed incorrectly (therefore she lost $500). On her next turn, she got the $800 question correct. Write an expression that determines Courtney’s score.Then simplify the expression to find her total winnings for that category. 73. In Ohio, the highest temperature ever recorded 113° 39° was F and the lowest was F. Find the difference between the highest and lowest temperatures. (Source: Information Please Almanac) (See Example 5.) 75. The highest mountain in the world is Mt. Everest, located in the Himalayas. Its height is 8848 meters (m).The lowest recorded depth in the ocean is located in the Marianas Trench in the Pacific Ocean. Its “height” relative to sea level is 11,033 m. Determine the difference in elevation, in meters, between the highest mountain in the world and the deepest ocean trench. (Source: Information Please Almanac) 74. On a recent winter day at the South Pole, the temperature was 52° F. On the same day in Springfield, Missouri, it was a pleasant summer temperature of F.What was the difference in temperature? 76. The lowest point in North America is located in Death Valley, California, at an elevation of 282 ft. The highest point in North America is Mt. McKinley, Alaska, at an elevation of 20,320 ft. Find the difference in elevation, in feet, between the highest and lowest points in North America. (Source: Information Please Almanac) Concept 4: Applying the Order of Operations For Exercises 77–96, perform the indicated operations. (See Examples 6–7.) 77. 6 8 (2) 4 1 78. 3 (4) 1 2 5 79. 1 7 (3) 8 10 80. 13 7 4 3 (1) 81. 2 (8) 7 3 15 82. 8 (13) 1 9 83. 6 (1) (8) (10) 84. 8 (3) (5) (2) 85. 86. 87. 88. 11 14 a 9 7 b 3 2 13 10 8 15 a 2 5 15 525 233 112 4 6 b 4 511 34 192 4 6 75°
miller_beginning_intermediate_algebra_4e_ch1_3
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