Question

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

Answer 1

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