Question

mr.bailey purchased some groceries that cost d dollars. he paid $50 bill. write an expression for the amount of he will receives

Answer 1

C will represent the amount he will get back.
C=$50-d

Answer 2

- "r" ; represents the amount he will receive
- "d" ; represents the cost 
- Mr. Bailey paid a 50$ bill

So the amount Mr. Bailey paid subtracted by the cost of the groceries will equal the amount he will recieve in change. That should look something like this ; " 50 - d = r "