All of the current year's entries for Zimmerman Company have been made, except the following adjusting entries. The company's annual accounting year ends on December 31

On September 1 of the current year, Zimmerman collected six months' rent of $7,980 on storage space. At that date, Zimmerman debited Cash and credited Unearned Rent Revenue for $7,980.

On October 1 of the current year, the company borrowed $15,600 from a local bank and signed a one-year, 13 percent note for that amount. The principal and interest are payable on the maturity date.

Depreciation of $2,400 must be recognized on a service truck purchased in July of the current year at a cost of $23,000.

Cash of $4,200 was collected on November of the current year, for services to be rendered evenly over the next year beginning on November 1 of the current year. Unearned Service Revenue was credited when the cash was received.

On November 1 of the current year, Zimmerman paid a one-year premium for property insurance, $8,160, for coverage starting on that date. Cash was credited and Prepaid Insurance was debited for this amount.

The company earned service revenue of $4,200 on a special job that was completed December 29 of the current year. Collection will be made during January of the next year. No entry has been recorded.

At December 31 of the current year, wages earned by employees totaled $14,100. The employees will be paid on the next payroll date in January of the next year.

On December 31 of the current year, the company estimated it owed $490 for this year's property taxes on land. The tax will be paid when the bill is received in January of next year

2. Using the following headings, indicate the effect of each adjusting entry and the amount of the effect. Use + for increase, for decrease. (Reminder: Assets = Liabilities + Stockholders Equity; Revenues Expenses = Net Income; and Net Income accounts are closed to Retained Earnings, a part of Stockholders Equity.)