ANSWER
73
EXPLANATION
Marcus had a debt of $120 on his credit card.
He made a payment such that $47 is remaining in the debt on his credit card.
It is important to note that a debt is best represented as a negative number since it is money owed.
So, his initial debt is written as -$120 and after the payment -$47.
So, to find the integer that represents the change in his credit card balance, we have to find the difference in the final and initial debts that he had.
That is:
Difference = -47 - (-120)
Difference = -47 + 120 => 120 - 47
Difference = $73
The integer that best represents the change is 73
