Objectives: State and use symbols of inequality. Solve inequalities that involve addition and subtraction. Standards Addressed: C: Create and interpret inequalities that model problem situations E: Select and use a strategy to solve an inequality and check the solution.

 D < $3.10

 D < $3.75

 c + 7 < c < -18

 The solution to an inequality is the set of all numbers that make the statement true.  The solution set might be listed, described, or graphed.  An inequality is graphed as an interval, a ray, or a line. Included endpoints are shown as dots,, while endpoints not included are shown as open circles, o.

 t + 7 < t < -10