Math

Math

Storyboard Text

  • Minutes Later...
  • Guess I'm back now, well, go on with your explanation.
  • -x-2 + 80x - 1500 > 0
  • Before we go to the answer, first we need to make it into a quadratic equation. So, it will become -x-2 + 80x - 1500 = 0.
  • Then from the equation, we should "factor" the left side of it, so it will become (x+30) (x-50) = 0.
  • We need to reverse the inequality first, so we multiply both of the sides by -1.
  • After that, we need to test the values in the interval in order for us to see if it works.
  • x < 30 and x < 50 doesn't work with the original inequalities though.
  • Nice job! I understand it now, thanks to you. Thank you very much!
  • It is my pleasure boss!
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