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Chapter 3

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Chapter 3 Chapter 3 Presentation Transcript

  • C WARM UPhapt •Solve the problems we learned about last class:er 1.Combine like terms 3x + 5y + z - 2x + 10 – 4y + 7z3 2. 3. 4.
  • Cha PRACTICEpt x + 5 = 10 y - 2 = 12er3 c + 4 = 19 b - 1 = 20
  • Cha PRACTICEpter3
  • Cha PRACTICEpte 2x + 2 = 10 5y - 3 = 12r3 4x - 1 = 7 6y + 12 = 78
  • C PRACTICEhapte Solve for the variable:r 7x - 2 - 3x = 10 5n + 12 = 9n - 163
  • EXAMPLESChapt 4 (x + 3) = 2(x – 6) 5(w + 3) +3(w + 1) = 14er3
  • Cha PRACTICEpter 2(a – 3) + 3(a + 4) = 26 3(x + 1) = 5(x – 2)3
  • C Word Problemshapte 1)Read the problem 2 or 3 timesr3 2)Underline any important information 3)Ask yourself, “What is this problem asking me to find?” 4)Choose a variable (the unknown) 5)Write an equation 6)Solve the equation
  • EXAMPLESChapt 1)Jessi worked as a telemarketer on a salary-er plus-commission basis. She was paid a salary of $300 a week and $12 commission for each sale.3 If her earnings for this week were $960, how many sales did she make? 2)Your test scores (percentage) in your class this Mod are 85, 71, 90, 81, and one score that you lost. Your average test score is a 81%. What is the missing test score?
  • Cha PRACTICEpte 1.Ellen is paid time and a half for each hour overr 40 hours she works in a week. Last week she3 worked 44 hours and earned $391. What is her normal hourly rate? 1.Sue bowled 132 and 160 in her first two games. What must she bowl in the third game to have an average of at least 150?