an artist intends to paint a 60-square-foot mural on a large wall that is 18 ft wide and 11 ft tall. find the dimensions of the mural if the artist leaves a border of uniform width around it.

Answer 1

Dimension of mural:
length = 18-2x
width = 11-2x

(18-2x)(11-2x) = 60 , where x < 5.5

expand, set up like a standard quadratic equation and solve for x,
make sure to reject the x where x > 5.5
Hint: it factors nicely

Answer 2

as you would have seen if you had read my response to you urgent post earlier this morning ...