Answer for number 3. Please help this is a summer final.

Joseph's claim about the polynomial multiplicity is correct
From the graph, we have the x-intercepts to be
x = -3
x = 1
x = 4
At x = 4, the graph do not cross the x-axis;
But instead, it has a turning point at this point
This means that there is a multiplicity of 2 at x = 4
So, we have:
Degree = 1 + 1 +2
Degree = 4
Hence, Joseph's claim is correct
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