Answer:
-1.50 . Please have a look in attachment
Explanation:
John had $200 in his bank account.
Account Balance = +200
John made a purchase at the grocery store that was $1.50 more than he had in his account.
Grocery Amount = 200 + 1.50
= -201.50
Account balance after purchasing grocery = 200.00 - 201.50
= -$1.50
Account balance is negative.
Please see the attachment for number line.