MAT 221

-10 < -2 + 8x < 22

4x + 7 < 11 or 1 ¨C x ¡Ü -2

Please help me solve these compound inequalities. Any instruction would be appreciated.

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asked by Stib
  1. -10 < -2 + 8x < 22
    add 2
    -8 < 8x < 24
    divide by +8 , (no change in inequality sign)
    -1 < x < 3

    Can't make out your symbols in the 2nd

    e.g. use <= for ≤ and >= for ≥

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    posted by Reiny
  2. I apologize for the formatting error.
    Here it is. Thanks for the help.

    4x + 7 < 11 or 1 – x ≤ -2

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    posted by Stib
  3. -10 < -2 + 8x < 22 compound inequalities

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    posted by steven

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