Question 242913
(12+2x)(9+2x)=154
108+18x+24x+4x^2=154
4x^2+42x+108-154=0
4x^2+42x-46=0
(4x-4)(x+11.5)=0
4x-4=0
4x=4
x=4/4
x=1 ft. ans. for the width of the border.
Proof:
(12+2)(9+2)=154
14*11=154
154=154