The Federal Railroad Administration requires that train horns sound 15-20 seconds before crossing a road. Part of the proposed rail line crosses a major road and the safety manager wants to figure out exactly where.

On the coordinate plane, the major road is modeled by the function f(x) = 0. The section of rail line is modeled by the function g(x) = x3 – 6x2 – 9x + 54.

Explain the key features of the function and graph of g(x). Show all of the work that is necessary to identify them. Find the intercepts of g(x) to find where the rail line crosses the road. Graph the rail line and the maj

Question

The Federal Railroad Administration requires that train horns sound 15-20 seconds before crossing a road. Part of the proposed rail line crosses a major road and the safety manager wants to figure out exactly where.

On the coordinate plane, the major road is modeled by the function f(x) = 0. The section of rail line is modeled by the function g(x) = x3 – 6x2 – 9x + 54.

Explain the key features of the function and graph of g(x). Show all of the work that is necessary to identify them. Find the intercepts of g(x) to find where the rail line crosses the road. Graph the rail line and the maj

anonymous · Answer

i really need help with finding the key features and how I'm supposed to graph it