Perimeter with variable lengths

๐‘ฅ = 1
BUILD THE RECTANGLE
(
1
๐‘ฅ +
6
)
(
2
๐‘ฅ +
2
)
Questions
▶ Find and simplify an expression for the perimeter of this rectangle.
▶ What is the value of the perimeter when ๐‘ฅ = ?
▶ What is the value of ๐‘ฅ if the perimeter is ?
▶ Could this rectangle ever be a square? If so, for what value of ๐‘ฅ?