Scotty and his dad are repairing the railing along the side of the deck. They put up eight supports with 4 feet between each one. If the first support is at one corner of the deck and the eighth support is at the other corner, how long is the side?

Answer 1

Let x = the supports. The ____ are the four feet between the supports. How many feet are there?

x____x____x____x____x____x____x____x

Answer 2

I don't get it