I hope I helped! :) :) :)
Answer:
x = 12
Step-by-step explanation:
Proportional relationship means that 
= k(a constant)
Here, k = 12/8 = 3/2
So, the equation is = 3/2.
Plug in y = 18, and we get 18/x = 3/2.
18 = 3/2x
x = 12
it depends how long the width and the length is. If the length is 5 cm and the width is 4 cm the perimeter will be 18cm. All you have to do is 5 doubled because there 2 sides for the length and 4 doubled because there are 2 sides for the width. I hope I have answered your question. XD
Answer:D
Step-by-step explanation:It has the most dots on it from what I counted
