The graphs of y1 = | 2x + 5 | and y2 = 7 are shown, along with the two points of intersection of the graphs. Explain how these two screens support the answers to Exercises 1–3.
Exercise 1
| 2x + 5 | = 7
Exercise 2
| 2x + 5 | ≤ 7
Exercise 3
| 2x + 5 | ≥ 7
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