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Which expression represents the area of a rectangle whose width is x + 3 and whose length is 4x - 7? A.5x - 4 B.10x - 8 C.4x2 - 21 D.4x2 + 5x - 21
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2 votes
Which expression represents the area of a rectangle whose width is x + 3 and whose

length is 4x - 7?
A.5x - 4
B.10x - 8
C.4x2 - 21
D.4x2 + 5x - 21

User DaveRandom
by
5.1k points

1 Answer

5 votes
D because (x+3)(4x-7)= 4x ²+5x-21
im guessing you’re in algebra dealing with factoring polynomials. basically what i did was use the formula for area which is L*W=A ;(length)(width)=area
and then you multiply the two to get D
User Vladiim
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5.7k points
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