1.3: Solve Linear Equations

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Academy Algebra II

• 1.3 Solve Linear Equations
• 1.5 Use Problem Solving Strategies and Models
• HW p.21-23 (20 52 every other even, 68, 70),
  p.38-39 (24-32 even)
• Quiz 1.3, 1.5, 2.7, 2.7 extension Friday

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1.3 Do Now Solve.

• 1.)
• 2.) 12(r 3) 2(r 5) 3r

3
p.23 69

• 3.) The bill for the repair of your bicycle was
  180. The cost of parts was 105. The cost of
  labor was 25 per hour. How many hours did the
  repair work take?

4
p.23 71

• 4.) You have two summer jobs. In the first job,
  you work 25 hours per week and earn 7.75 per
  hour. In the second job, you earn 6.25 per hour
  and can work as many hours you want. You want to
  earn 250 per week. Write an equation and find
  how many hours you must work at the second job.

5
Solve the equation. Check your solution

• 5.) 2(b 3) 4b 2 6.) 2x 3 6x 25
• 7.)

6
Solve the equation.

• 8.) 0.6x 0.5 2.9 9.)
• 10.) 3.8w 3.2 2.3(w 4)

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• p.35 Example 3
• 11.) You are hanging 4 championship banners on
• a wall in your schools gym. The banners are
• 8 feet wide and the wall is 62 feet long.
• There should an equal amount of space
• between the ends of the wall and the
• banners, and between each pair of banners.
• How far apart should the banners be placed?

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p.39 29

• 12.) You have a piece of wood that is 72 inches
  long. You cut the wood into three pieces. The
  second piece is 6 inches longer than the first
  piece. The third piece is 6 inches longer than
  the second piece. Write and solve an equation to
  find the lengths of the three pieces.

9
p.39 31

• 13.) A moving company weighs 20 boxes you have
  packed that contain either books or clothes and
  says the total weight is 404 pounds. You know
  that a box of books weighs 40 pounds and a box of
  clothes weighs 7 pounds. Write and solve an
  equation to find how many boxes of books ad how
  many boxes of clothes you packed.