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Extra info for Algebra 2
12 _ -_ ≤ -6n (4 3 ) Lesson 1-5 Solving Inequalities 37 CAR SALES For Exercises 45 and 46, use the following information. Mrs. 5% commission on her sales. If the average price of a car she sells is $30,500, about how many cars must she sell to make an annual income of at least $50,000? 45. Write an inequality to describe this situation. 46. Solve the inequality and interpret the solution. Define a variable and write an inequality for each problem. Then solve. 47. Twice the sum of a number and 5 is no more than 3 times that same number increased by 11.
When evaluating expressions, absolute value bars act as a grouping symbol. Perform any operations inside the absolute value bars first. 4 + 5y - 7 if y = -3. 4 + 5(-3) - 7 Replace y with -3. 4 + -15 - 7 Simplify 5(-3) first. 4 + -22 Subtract 7 from -15. 4 Add. 1 1A. Evaluate 4x + 3 - 3_ if x = -2. 2 1B. 1 Evaluate 1_ 2y + 1 if y = -_2 . 3 3 Lesson 1-4 Solving Absolute Value Equations Robert Yager/Getty Images 27 Absolute Value Equations Some equations contain absolute value expressions.
AGES Chun-Wei’s mother is 8 more than twice his age. His father is three years older than his mother is. If the three family members have lived a total of 94 years, how old is each family member? 61. SCHOOL TRIP A Parent Teacher Organization has raised $1800 to help pay for a trip to an amusement park. They ask that there be one adult for every five students attending. Adult tickets are $45 and student tickets are $30. If the group wants to take 50 students, how much will each student need to pay so that adults agreeing to chaperone pay nothing?
Algebra 2 by McGraw-Hill