Question 642320
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Write two ordered pairs *[tex \LARGE \left(x,f(x)\right)] where *[tex \LARGE x] is the number of boxes of widgets and *[tex \LARGE f(x)] is the total cost including shipping for *[tex \LARGE x] boxes of widgets.


Now do the two parts of the problem in reverse order from the way the question was asked.  First find the function definition (what the question calls a "formula" for the total cost, including shipping, of *[tex \LARGE x] boxes of widgets.


Use the two-point form of an equation of a line:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y\ -\ y_1\ =\ \left(\frac{y_1\ -\ y_2}{x_1\ -\ x_2}\right)(x\ -\ x_1) ]


where *[tex \Large \left(x_1,y_1\right)] and *[tex \Large \left(x_2,y_2\right)] are the coordinates of the given points, and *[tex \Large y_i\ =\ f(x)_i]


Finally, once you have your function defined, evaluate *[tex \Large f(1)]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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