Respuesta :

If the width is w then the length = 2w + 40, so the area

= w(2w + 40)

= 2w^2 + 40 w


A = 2w² + 40w

If the w = width and the length is 40 more than twice the width, we can write the dimensions of the soccer field as follows:  

w for the width and (2w + 40) for the lenth.  We multiply these two together to find the equation above for area