Final answer:
The equation that corresponds to the situation where the balance, B, of Harper's loan increases by 0.22 each month is B = B + 0.22.
Step-by-step explanation:
The equation that corresponds to the situation where the balance, B, of Harper's loan increases by 0.22 each month is:
B = B + 0.22
This equation represents the idea that each month, the balance increases by 0.22. The variable B represents the current balance, and adding 0.22 to it each month updates the balance to the new amount.