Answer:
Width = 
Step-by-step explanation:
All we have to do is to use the method of changing the subject. First we know that length * width is equal to area.
Area = length * width
We have the area and the length but we don't have the width. So we substitute the values we have int the equation and make the width (w) the subject.
(c^2 - 4x - 12) = (x + 2) * w
(c^2 - 4x - 12) = w(x +2)
Divide both sides by (x+2) so w can stand alone.

w = 
 
        
             
        
        
        
Answer:
the first one is the answer, with maybe the third if you can choose multiple. 
Step-by-step explanation:
Let's go throught hese one at a time.  First though it is important to note that the poitns look like they are going upward.  So we want a relationship that it makes sense  as one increases so does the other.
the amount of money made made compared to the amount of items sold
So, pretending we run a store.  Does it make sense that if we make more money more items were sold?  I would say so.
the amoutn of ink left in a pen compared to the time using it
Doe sit make sense that as the amount of ink increases the time using it increases?  i would say no, because ink usually decreases the more it is used.
the amount of money in your account compared to the number of stores that you shop at
Does it make sense that if you have more money in your account you shop at more stores?  I think so, though the first one still makes the most sense if you can only pick one.  Since it doesn't seem directly to imply that, I would say it makes more sense that you just but more in general, not necessarily from more stores.
the number of goals scored in a soccer match compared to the number of red cards given
does it make sense that more goals would also have more red cards?  i don't think so, though I don't know soccer that much.  it doesn't seem like goals mean there should be any more red cards.
So in total it seems like the first one is the answer, with maybe the third if you can choose multiple.  
 
        
             
        
        
        
Here, both numbers are divisible by 7 so that brings you to 9:4
        
             
        
        
        
Answer:
2/3=4/6 and that's 4 times 1/6. So the answer is 100% times 4 which is 400%
 
        
                    
             
        
        
        
Answer: The domain of this function is all real numbers less than or equal to 3. 
Step-by-step explanation: