Please help; thank you! :D ((I would offer some points, but I'm new and I don't know how that works lol))

Answer/Step-by-step explanation:

Given that the side length of a squared field is represented by the expression 3 - 7x,

a. Perimeter of the squared field (expressed as a sum):

Permimeter of a square = s + s + s + s

All sides of a square are of equal length.

s = side length of the squared field = 3 - 7x

Thus,

Perimeter expressed as a sum = (3-7x) + (3-7x) + (3-7x) + (3-7x)

b. Permitted of squared field expressed as a product:

Perimeter of square expressed as product = 4(s)

s = side length of squared field = 3 - 7x

Permimeter of squared field expressed as a product = 4(3 - 7x)

c. An equivalent expression for the product in (b) can be written using the distributive property as follows:

Perimeter = 4(3 - 7x)

Perimeter = 4(3) - 4(7x)

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !