First we have to find the perimeter. Which is for rectangles 2(l+w)
that means the perimeter is 75.84 ft
each slat is apparently half a foot which would be 0.5ft
then you simply divide 0.5 from 75.84 and round it to the nearest whole number.
For this case we have that by definition, the area of a rectangle is given by:

Where:
a, b: They are the dimensions of the rectangle.
In the statement we are told that "The area is greater than 12 square inches", then:

Also we have:

Substituting we have:

Dividing between 2 on both sides:

Finally we have:

ANswer:

Answer:
the independant variable is x