*algebra question!! *

Usually fencing is done by linear feet, so I will do this problem both ways

Doing it with area:

First find the area of the rectangle (8 x 12) = 96 feet^{2}

Next, multiply the area by the unit cost to get the pretax cost: 96 ft^{2 }
x $9/ft^{2} = $864

Now, multiply that number by the tax and add to the pretax cost to get the final cost: (0.07 x 864) + 864 = 60.48 + 864 = $924.48

Now if it is by linear feet:

First find the perimeter (8 + 12 + 8 + 12) = 40 feet

Then multiply the perimeter by the unit cost to get the pretax cost: 40 feet x $9/foot = $360

Finally, multiply the pretax cost by the tax and add that to the pretax cost to get the final cost: (360 x 0.07) + 360 = 25.20 + 360 = $385.20

## Comments

one vital piece of information is need...how high is the fence?

I don't think it's missing. It may not be specified, but it really doesn't need to be.

It may be 12ft high or 8ft high, but does it change the cost?