While shopping at the mall, Jonathan saw two toys he wanted to buy. The toys originally cost $15.95 and $11.65,
 but they were on sale for off the regular price.
 Jonathan paid for the toys with a $20 bill. Which expression can be used to determine how much change Jonathan received?
 20-1/3(15.95+11.65)
 20-((15.95+11.65)-1/3(15.95+11.65))
 ((15.95+11.65)-1/3(15.95+11.65))-20
 1/3(15.95+11.65)-20