Answer:
heres some apps you can use to help you wolframalpha and mathly
Step-by-step explanation:
 
        
             
        
        
        
So take 48 then subtract 31 which would equal 17. Then add back the yards they lost. So 17+19=36
        
                    
             
        
        
        
0 or 1 or more than one for zero functions 
 
        
             
        
        
        
1/8
Explanation: There is 8 isle seats and it says what if one person would want to sit in ONE of the isle seats 1:person 8:seats
1/8
        
             
        
        
        
Ok she can buy 1 ten and 25 ones, 2 tens 15 ones, 3 tens 5 ones, and 35 ones. (Pretty sure)