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Mathematics 19 Online
OpenStudy (anonymous):

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

RhondaSommer (rhondasommer):

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RhondaSommer (rhondasommer):

all you have to do is graph this equation and point out what the x-line equals and what the y line equals ^_^ hope that helps

OpenStudy (anonymous):

do you have any idea how to go about graphing it?

RhondaSommer (rhondasommer):

https://www.desmos.com/calculator/7syd6xjvvq

RhondaSommer (rhondasommer):

:)

OpenStudy (anonymous):

is that whole thing for this problem?

OpenStudy (anonymous):

i know how to graph equations and things, but tis one i don't know what the y intercept or where the key features of the function or graph

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