Find the x-intercepts of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = -x3(x + 4)2(x - 7)

A. 0, crosses the x-axis;
-4, touches the x-axis and turns around;
7, crosses the x-axis
B. 0, touches the x-axis and turns around;
4, crosses the x-axis;
7, crosses the x-axis
C. 0, touches the x-axis and turns around;
-4, touches the x-axis and turns around;
7, crosses the x-axis
D. 0, crosses the x-axis;
4, touches the x-axis and turns around;
-7, crosses the x-axis


Answer: A

Mathematics

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