Section 1.4 Addition of Real Numbers 53 85. Seventeen more than 86. Twenty-four more than 21 7 87. Three times the sum of and 20 88. Two times the sum of 6 and 14 10 89. Five more than the sum of and 90. Negative six more than the sum of 4 and 7 2 1 Concept 4: Applications Involving Addition of Real Numbers 91. The temperature in Minneapolis, Minnesota, began at 5° F ( 5° below zero) at 6:00 A.M. By noon, 13° 11° the temperature had risen , and by the end of the day, the temperature had dropped from its noontime high. Write an expression using addition that describes the change in temperatures during the day.Then evaluate the expression to give the temperature at the end of the day. 92. The temperature in Toronto, Ontario, Canada, began at F. A cold front went through at 9° 2° noon, and the temperature dropped . By 4:00 P.M., the temperature had risen from its noontime low. Write an expression using addition that describes the changes in temperature during the day.Then evaluate the expression to give the temperature at the end of the day. 93. For 4 months,Amara monitored her weight loss or gain. Her records showed that she lost 8 lb, gained 1 lb, gained 2 lb, and lost 5 lb. Write an expression using addition that describes Amara’s total loss or gain and evaluate the expression. Interpret the result. (See Example 6.) 94. Alan just started an online business. His profit/loss records for the past 5 months show that he had a profit of $200, a profit of $750, a loss of $340, a loss of $290, and a profit of $900. Write an expression using addition that describes Alan’s total profit or loss and evaluate the expression. Interpret the result. 98. A company that has been in business for 5 years has the following profit and loss record. a. Write an expression using addition to describe the company’s profit/loss activity. b. Evaluate the expression from part (a) to determine the company’s net profit or loss. 95. Yoshima has $52.23 in her checking account. She writes a check for groceries for $52.95. (See Example 6.) a. Write an addition problem that expresses Yoshima’s transaction. b. Is Yoshima’s account overdrawn? 97. The table gives the golf scores for Aree Song for five rounds of the LPGA Final Qualifying Tournament. Find her total score. 4° Year Profit/Loss ($) 1 50,000 2 32,000 3 5,000 4 13,000 5 26,000 Aree Song Round 1 5 Round 2 0 Round 3 1 Round 4 1 Round 5 1 96. Mohammad has $40.02 in his checking account. He writes a check for a pair of shoes for $40.96. a. Write an addition problem that expresses Mohammad’s transaction. b. Is Mohammad’s account overdrawn?
miller_beginning_intermediate_algebra_4e_ch1_3
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