Math  Absolute functions
posted by Lucy X .
A delivery business plans to serve three towns on a stretch of highway. For every trip they make to town A, which we'll place at position x=0, they expect to make two trips to town B (at position x=1) and 3 trips to town C (at position x=4). If they build their delivery centre at position x, then, their daily driving time should be proportional to d(x) = x + 2x  1 + 3x  4. The owners are thinking of building the center in town C, since it's the biggest but overhead costs would be lower in town B. Where should they build?

Well, I think I should sketch the function too, but I don't know how...
Thanks for any help.

Math  Absolute functions 
MathMate
Using the function
d(x) = x + 2x  1 + 3x  4
make a table of values of
x and d(x)
for x = 0, x=1 and x=4.
If the company decides to build the delivery centre along a highway, then intermediate values of x should also be considered.
I have an impression that the owners will have quite a fight over the location.
Tell me what you think.
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