Final answer:
To find the difference in profit between the two months, subtract the loss from the profit. The expression 6,400 - 4,700 would give the difference in profit, which is $1,700.
Step-by-step explanation:
To find the difference in profit between the two months, you need to subtract the loss from the profit. Since the company had a monthly profit of $6,400 and a loss of $4,700 the next month, you would subtract the loss from the profit. The expression that represents this is 6,400 - 4,700. This would give you the difference in profit between the two months, which is $1,700.