What is the value of x when -3x+7x=-12?

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

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Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters