PreCalc

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  • I am a well known man
  • I am a recondite man
  • I am going to run west
  • We are going to race from this location, but run opposite directions
  • I am going to run east
  • This race can be demonstrated through the equation: |1/3x+5|-13=-4
  • zoom
  • zoom
  • Oh no! The two men tied in their race, let's see if they went the same distance
  • In order to do this, you first add the -13 to the other side of the equation
  • Now you set |1/3x+5| equal to 9 and -9 because they ran opposite directions from the same location, which can be considered 0
  • By plugging those values back in, you'll find that you'll get the same value, therefore the men really did tie. 
  • Now solve both equations normally by subtracting 5 and then multiplying by 3.  This gives you the answers 12 and -42.
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