SOLUTION: What are the dimensions of a rectangle if the length is 7 less than twice the width and the area is 30?

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Question 601683: What are the dimensions of a rectangle if the length is 7 less than twice the width and the area is 30?
Answer by flame8855(424) About Me  (Show Source):
You can put this solution on YOUR website!
let x be the length
let y be the width
x=2y-7
xy=30
(2y-7)y= 30
2y^2 -7y=30
y= -2.5, y =6
so y = 6
x= 5