To calculate how much money Nick has left after paying for the TV and his mortgage, we need to subtract the total expenses from his initial amount.
Total expenses = TV payment + Mortgage payment
Total expenses = £449 + £630
Total expenses = £1079
Money left = Initial amount - Total expenses
Money left = £1200 - £1079
Money left = £121
Therefore, Nick has £121 left after paying for the TV and his mortgage.
Hopes this helps you out :D