Answer:
i think its B
Step-by-step explanation:
 
        
             
        
        
        
Answer: Y=2.50x+b
Step-by-step explanation:
Thats not the whole answer, you didnt attach the graph but what you need to do is find the y-intercept and put that into b and theres your equation. The y-intercept(B) represents the initial  money that joe had in his savings the 2.50x part or the slope is the money that he states he can add each week.
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Answer:
y=0.75x+5
Step-by-step explanation:
x=20
y=20
20-5=15
15/0.75=20
20 games
 
        
                    
             
        
        
        
Answer
the number of  donuts sold is: 693
Step-by-step explanation:
i get this answer by taking:
231 x 3 = and that equal 693. this is the number  of donuts sold. 
 
        
             
        
        
        
1847..............................