Last week, Byron bought 5 containers of yogurt and spent $12.88 on other groceries. This week Cassandra bought 3 containers of the same yogurt and spent $11.50 on other groceries. How much more money did Byron spend than Cassandra? Write expressions to represent the amount spent by Byron and the amount spent by Cassandra.

Byron:

Cassandra:

Write an expression to represent the difference by subtracting the amount that Cassandra spent from the amount that Byron spent.

What expression represents how much more money Byron spent than Cassandra?