Equipment depreciation was $ $1$ comma $500$$$1,500.$

b$.$

$ $700$$$700$ of advertising expense was incurred but not paid.$($Use Advertising$$ Payable.$)$

c$.$

Office Supplies on hand at the end of the year totaled $ $250$$$250.$ The beginning balance of Office Supplies was $ $600$$$600.($Assume no office supplies were purchased during the$$ period.$)$

d$.$

$ $1$ comma $200$$$1,200$ of rent revenue was earned but not recorded or received.

e$.$

Unearned revenue of $ $3$ comma $000$$$3,000$ has been earned.