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Mackenzie2013
 one year ago
A company distributes its product by train and by truck. The cost of distributing by train can be modeled as −0.07x^2 + 40x − 105, and the cost of distributing by truck can be modeled as −0.03x^2 + 22x − 180, where x is the number of tons of product distributed. Write a polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck.
Mackenzie2013
 one year ago
A company distributes its product by train and by truck. The cost of distributing by train can be modeled as −0.07x^2 + 40x − 105, and the cost of distributing by truck can be modeled as −0.03x^2 + 22x − 180, where x is the number of tons of product distributed. Write a polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck.

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ybarrap
 one year ago
Best ResponseYou've already chosen the best response.1Take your 1st function: −0.07x^2 + 40x − 105 Then subtract the second function: −0.03x^2 + 22x − 180 What do you get?

Mackenzie2013
 one year ago
Best ResponseYou've already chosen the best response.0What I got is not an answer choice.

Mackenzie2013
 one year ago
Best ResponseYou've already chosen the best response.0I just cleared it out haha I need to have a polynomial as an answer, I got a decimal number?

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.1$$ −0.07x^2 + 40x − 105  (−0.03x^2 + 22x − 180)\\ =−0.07x^2+0.03x^2+40x22x105180\\ =(.03.07)x^2+x(4022)285 $$ Can you do the rest?

Mackenzie2013
 one year ago
Best ResponseYou've already chosen the best response.0this stuff confuseses me so much haha.. So I take _.(.03.07_x^2+x(4022)285 as subtracting or adding? :S

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.1Do the arithmetic within the parenthesis. Like this... $$ =0.04x^2+18x285 $$

Mackenzie2013
 one year ago
Best ResponseYou've already chosen the best response.0−0.04x^2 + 18x − 285 the correct answer?
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