INTRODUCTORY EXERCISES-Inequalities


(1) Solve the following linear inequalities.

 (a) 7x - 8  4x + 7

 (b) 3 - x  5(3 - x)

 (c)   x
      ---  4
      -2

 (d) -3x - 5  2

 (e) 75  0.4t + 41.45  85
HINT: For each of these inequalities, try to solve as if the inequality were an equation, except remembering that multiplying or dividing both sides of an inequality by a negative number changes the direction of the inequality.

For question (e), try solving both inequalities at once. It is possible in this case.


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