Answer:
an unknown point? like 0,7 or 0,5 or 0,1 or 0,0 or 0,anything?
Step-by-step explanation:
 
        
             
        
        
        
Answer:
$700
Step-by-step explanation:
25 the least amount of money earned by each student multiplied by 28 the number of students. 
 
        
             
        
        
        
Answer:
4 hours
  hours
Step-by-step explanation:
he was gone for 5  hours, he spent
 hours, he spent  an hour driving.
 an hour driving.
5  -
 -  = 4
 = 4 hours at  work.
 hours at  work.