Answer:
12.75
Step-by-step explanation:
13.55 should be your answer
To answer the question let x be the amount of money James will have after he sees Rita. If it was him who owed Rita $12 and he intent to pay, he will have $42.80 - $12 after seeing her. However, if it was Rita who owed him the amount, the money he will have after seeing her will be $42.80 + $12. Thus, the equations are,
x = 42.80 - 12 and x = 42.80 + 12