Analyze each of the following transactions by showing the effects on the accounting equation$-$specifically, identify the accounts and amounts $($including $+$ or $-)$ for each transaction:

Note: Enter all amounts as positive values.

a$.$ The company provides $$23,800$ of services on credit.

b$.$ The company estimates that $$1,180$ of its accounts receivable is uncollectible.

c$.$ The company writes off a customer's entire $$680$ account as uncollectible.