Angelo buys a popcorn for 4 dollars. and a small drink for 3 dollars. and a box of fruit snacks for 5 dollars. write and solve and equation of how much angelo gave to the cashier if he got three dollars back.

Change=given-cost
cost=total cost=cost for all of them added together
cost=popcorn+small drink+fruit snacks
cost=4+3+5
cost=12

given=x
change=3

3=x-12
that is the equation
solve
add 12 to both sides
15=x
he gave $15 to the cashier

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