The length of a rectangle is (x+3) inches long and te width is 3 inches. if the area is 15 square inches, write and solve an equation to find the length of the rectangle

X * (x + 3) = 15

x^2 + 3x - 15 = 0

x = - 3 + - sqrt (9 - 4*1*-15) / (2*1)

x = - 3 + - sqrt (69) / 2

x = - 3 + - 8.3066 / 2

x = 5.3066/2

x = 2.6533

So, the rectangle is 2.6533 inches by 5.6533 inches.

and Merry Christmas!