Which mathematical expression would help determine how much money Jose has left after paying for pizza and movie tickets?

To determine how much money Jose has left after paying for pizza and movie tickets, you need to start with the total amount of money he has and subtract the total costs of both expenses.

Assuming Jose has $20, the expression in choice B, which is 20 - (9/2 + 12), effectively represents this situation. Here, (9/2) could represent the cost of pizza and 12 could represent the cost of movie tickets. Thus, you first calculate the combined expense by adding the costs, and then subtract that total from the initial amount Jose has.

In this case, if you were to break it down further:

1. Calculate the total expenses:

• 9/2 (which is $4.50) + $12 (for the movie tickets) equals $16.50.

2. Then subtract this total from his initial amount:

• $20 - $16.50 equals $3.50.

This means that after paying for both the pizza and movie tickets, Jose would have $3.50 left.

The other expressions would not correctly reflect the situation of determining how much money he has left after his expenses. Hence, option B stands out as the correct expression for this