Answer:
C) y is equal to 10.5x
Step-by-step explanation:
$31.50 is charged for <em>3  </em>hours so, for 1 hour we need to divide 31.50 by 3, which results in 10.50. So 1 hour of babysitting is $10.50
this is because x is equal to the number of hours they babysit. we do not know the actual so it is replaced with x 
and y is equal to the sum of 10.5x because we multiply the number of hours worked, and the amount per hour.
 
        
             
        
        
        
Answer:
x= 30/ 17 
Step-by-step explanation: