Baltimore Company uses aging to estimate uncollectibles. At the end of the fiscal year, December 31, 2018, Accounts Receivable has a balance that consists of:

Dollar Value Age of Account Estimated Collectible
$170,000 < 30 days old 99%
60,000 30 to 60 days old 91%
30,000 61 to 120 days old 80%
14,000 > 120 days old 13%

The following transactions occurred during july: received $1,000 cash for services provided to a customer during july. received $4,000 cash investment from bob johnson, the owner of the business received $850 from a customer in partial payment of his account receivable which arose from sales in june. provided services to a customer on credit, $475. borrowed $7,000 from the bank by signing a promissory note. received $1,350 cash from a customer for services to be rendered next year. what was the amount of revenue for july?