The formula of the perimeter of a rectangle is 2l+2w so look at the photo
        
             
        
        
        
Answer:
We conclude the equation is linear because it can be rewritten in the form  .
.
Hence, option D is correct.
Step-by-step explanation:
The slope-intercept form of the line or linear equation
 
where
 is the slope is the slope
 is the y-intercept is the y-intercept
<u>Important Tip:</u>
The graph of a linear equation is always a straight line. 
Convert the given equation in the slope-intercept form

subtract 18x from both sides

simplify

divide both sides by 9

Now, comparing the equation  with a slop-intercept form of linear equation
 with a slop-intercept form of linear equation
- The y-intercept b = -416/9
Therefore, we conclude the equation is linear because it can be rewritten in the form  .
.
From the attached graph, is also clear that the graph of the equation  is a straight line.
 is a straight line.
Hence, option D is correct.
 
        
                    
             
        
        
        
Answer:
4 and 2
Step-by-step explanation:
4x4+2x2
16+4=20
 
        
                    
             
        
        
        
your answer's correct. 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
60 minutes
Step-by-step explanation:
Let the number of minutes be represented as x
For Plan A
 Plan A charges $35 plus $0.25 per minute for calls. 
$35 + $0.25 × x
35 + 0.25x
For Plan B
Plan B charges $20 plus $0.50 per minute for calls.
$20 + $0.50 × x
20 + 0.50x
 For what number of minutes do both plans cost the same amount?
This is calculated by equating Plan A to Plan B
Plan A = Plan B
35 + 0.25x = 20 + 0.50x
Collect like terms
35 - 20 = 0.50x - 0.25x
15 = 0.25x
x = 15/0.25
x = 60 minutes.
Hence, the number of minutes that both plans cost the same amount is 60 minutes