Jamaal used a square piece of poster board to show the main points of his science project. the length of each side of the poster board was 2 3/5 feet. find the perimeter of the poster board.

In order to answer this, we need to know the formula of finding a perimeter.
By definition, perimeter is the sum of all the sides of a polygon.

The given is a square with a side length of 2 3/5 feet.

The perimeter of a square is 4*S

Perimeter = 4 * S
Perimeter = 4 * (2 3/5)
Perimeter = 4 * (13/5)
Perimeter = 52/5 feet

So the perimeter is 52/5 feet of 10 2/5 feet.

The equation i believe is 4+ i am not sure about the part: the number of weeks in a group of days so i can't you on that part