The following transactions occurred during July:
a. Received $1,900 cash for services provided to a customer during July.
b. Received $3,200 cash investment from Barbara Hanson, the owner of the business..
Received $1,250 from a customer in partial payment of his account receivable, which arose from sales in June.
d. Provided services to a customer on credit, $875.
e. Signed a promissory note for a $10,000 bank loan.
f. Received $1,750 cash from a customer for services to be rendered next year.
What was the amount of revenue for July?