Answer:
4 feet long, 4 feet wide
Step-by-step explanation:
Answer:

Step-by-step explanation:
Isolate the variable, do this by first multiplying both sides by two


Subtract 2x from both sides of the equation

Add one to both sides of the equation

Divide both sides by 2

Answer:
10 units
Step-by-step explanation:
LMNO is a square.
All sides of square are equal
MN = LM
3x + 1 = x + 7
3x - x = 7 - 1
2x = 6
x = 6/2
x = 3
LM = x + 7 = 3 + 7 = 10
LM = 10 units