Chapter 4 - Polynomial and Rational Functions - 4.1 Polynomial Functions and Models - 4.1 Assess Your Understanding - Page 185: 70

could be, $x=-1$ (multiplicity 2), $x=2$ (multiplicity 2). $n=4$.

Step 1. Based on the given graph, we can identify it could be the graph of a polynomial function. Step 2. We can list the real zeros as $x=-1$ (multiplicity 2), $x=2$ (multiplicity 2). Step 3. The least degree the polynomial is $n=4$.