A rectangular piece of cardboard has

a length that is 16 inches more than

the width. The area of the cardboard

is 297 sq. in.

let the width be x

length x+16

area 297

x(x+16)=297

x^2+16x-297=0

(x+27)(x-11)=0

x=11

width is 11 inches

length 11+16= 27 inches