Question 1103693



The menu itself without the added border is {{{9*13}}} square inches.

If x is the uniform with of border, then total area border plus menu is {{{(9+2x)(13+2x)}}}.


The amount of border alone must be 48 square inches. (GIVEN)


{{{(9+2x)(13+2x)-9*13=48}}}
Simplify and solve this for x.


{{{4x^2+18x+26x=48}}}

{{{4x^2+44x-48=0}}}

{{{x^2+11x-12=0}}}

and you can probably finish from here.