Answer:
its c
Step-by-step explanation:
 
        
             
        
        
        
Answer: just graph them
Step-by-step explanation: the month is on the x axis and the money/people is in the y axis. 
 
        
             
        
        
        
Answer:
Unfortunately, you cannot delete the question.
Step-by-step explanation:
Unfortunately, you cannot delete the question. Once a question or an answer has been submitted, you can only edit the question/answer for 30 minutes. Once this timeframe is over it can no longer be edited at all. This however does not include deleting the question/answer. The only possible way to delete a question is if it is flagged for whatever reason as going against the website's policy or by getting in contact with an administrator/moderator and having them remove the question.
 
        
             
        
        
        
Graphed it
If you need to do it manualy, consider using a table of values
 
        
        
        
So, bike=b and accessories=a.
b+a=320
Since the bike is worth 7 times more than the accessories, the b would turn into 7a (because 7 times the cost of accessories is the cost of the bike).
The equation would now turn into 7a+a=320.
Solve for a.
7a+a=320
8a=320
a=40
Now that you know the cost of the accessories, you multiply that 40
by 7 to get the cost of the bike.
40(7)
280
The cost of the bike is $280. 
The cost of the accessories are/is $40.