For Exercise:
(a) Use a graph [as in Example 7(a)] to determine which of the following general forms describes the solution set of the given inequality:
(b) Use a graphing utility [as in Example 7(b)] to estimate to the nearest hundredth the value of a, and where appropriate, b.
(c) Solve the inequality algebraically and write the solution set using interval notation. Check that your answers are consistent with the graphical results in parts (a) and (b).
Example 7(a) and (b) A graphical approach to solving an inequality
7x − 2 ≥ 0
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