After finishing a study session with her classmates, Lisa returned to the office of the Wildwood Inn to take a closer look at the record-keeping that had taken place over the years. In April the accounts payable debits totaled $1,200, the cash debits totaled $2,500, and the revenue debits totaled $750.

Using the double-entry accounting system, if these three debits were the only debits in April, then the total of all credits for April would be $__________.