So far, you've only defined f(x). You haven't asked a question.
Okay, it looks like you're going to have to do this on your own (me too lol). I'm guessing you have to make a video also?
The function F ( x ) = 3 1 x 2 + 3 x − 18 is a quadratic function with a vertex at ( − 4.5 , − 24.75 ) , and a y-intercept at (0, -18). The x-intercepts can be found by solving the quadratic equation derived from setting the function equal to zero. The graph opens upwards, indicating a minimum point at the vertex.
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[tex]439 \times 27 = 11.853[/tex]