Always add them all around and then divide the two and you should get the correct answer
        
             
        
        
        
Answer:

Step-by-step explanation:
The formula of an area of a rectangle:

l - length
w - width
We have

Substitute:
 <em>divide both sides by 15</em>
          <em>divide both sides by 15</em>

The formula of a perimeter of a rectangle:

Substitute:

 
        
             
        
        
        
90 + 3 + 4 = 97
Your answer is 97.
        
             
        
        
        
Answer:
(150, 100) is the solution for the system of equations
Step-by-step explanation:
Without more context, I cannot give you an exact answer, but this graph shows the solution to a system of equations. When y is 100, x is 150.
Have a nice day!
      I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather