In Exercises 2730, use the graph to estimate any solutions of the system. Confirm by

Chapter 7, Problem 7.1.1.37

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In Exercises 27–30, use the graph to estimate any solutions of the system. Confirm by substitution.

\(\begin{array}{l} y=1+2 x-x^{2} \\ y=1-x \end{array}\)

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