Finding inequalities and absolute value


Assignment:

Young’s rule for determining the amount of a medicine dosage for a child is given by C =   a ad / A + 12  where a is the childs age and d is the usual adult dosage, in milligrams.

The dosage of a medication for a 5 year old child must stay between 50mg and 100 mg. Find the equivalent adult dosage.

  • 2|2x – 7| + 11 = 25
  • | 3x -2 / 5| ≥ 1
  • -4 ≤ 7 - 3x / 5 ≤ 4
  • 7 - 3x / 5   < -4  or 7 - 3x / 5 > 4
  • |5x + 2|  ≤ 13
  • |7 – 2y| > 5


4y – 3x ≥ -12    equation (1)
4y + 3x ≥ -36.    equation (2)
y ≤ 0,    equation (3)
x ≤ 0    equation (4)

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Algebra: Finding inequalities and absolute value
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