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anonymous
 5 years ago
How do I find the price of a cd if 3 cd + 2 DVD=$67. And 2cd+4dvd=$90 ?
anonymous
 5 years ago
How do I find the price of a cd if 3 cd + 2 DVD=$67. And 2cd+4dvd=$90 ?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0looks to me like you will have to set up a system of equations and use either the elimination methode or the subtution methode to solve this problem

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0zbay is exactly correct. But if you have a graphing calculator, you could set up a matrix.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I set up a graph but got stuck

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0do it this way 3c+2d=67 2c+4d=90

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0there is your system of equations

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I tried that too but got stuck

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok where did you get stuck at? and what methode were you trying?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I tried both. I set up a chart but sine the two are not right next to each other on the chart I got stuck.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh it's been a while for me but lets try this together

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok, first we want to pick a varible and make it an oppisite inverse of the other equation i am going to do this by multiplying the top function by 2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0(2)(3c+2d=67) 6c4d=134

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Do u know how to do it using a graph? Btw thanks for all your help.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.06c4d=134 2c+4d=90 No i don't think i know how to do the graph

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0when we combine them we get (4c=44)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Your awesome ,,, thanks

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok after you have your d value plug it into your orginal equation and solve for c
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