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OpenStudy (anonymous):
Write an EQUATION: Find the area of a rectangle with a length of 3x and a width of 2x + 4.
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OpenStudy (sburchette):
First begin with the area formula for a rectangle. \[A=lw\]We have been given the length and width in terms of x. \[l=3x \]\[w=2x+4\]Now we can substitute the 3x for l and 2x+4 for w in the area formula.\[A=3x(2x+4)\]\[A=6x^2+12x\]
OpenStudy (anonymous):
thnx!
OpenStudy (sburchette):
No problem =)
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