Answer:
he can buy 30
Step-by-step explanation:
21.62 divided by .78 = 30.0277777778,you dont have enough for 31
 
        
             
        
        
        
Answer: 1
Step-by-step explanation:
8 yellow / 8 total = 8/8 = 1
 
        
             
        
        
        
Answer:
In the pic
Step-by-step explanation:
First of all, in order to solve it you need to find the dots where the function crosses x line and y line.
Then, I named each dot according to the formula.
After that, it's just simple math.
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below :)