Prepare year-end adjusting journal entries for M&R Company as of December 31, 2017, for each of the following separate cases. (Entries can draw from the following partial chart of accounts: Cash; Accounts Receivable; Interest Receivable; Equipment; Wages Payable; Salary Payable; Interest Payable; Lawn Services Payable; Unearned Revenue; Revenue; Interest Revenue; Wages Expense; Salary Expense; Supplies Expense; Lawn Services Expense; Interest Expense.)
a. M&R Company provided $2,000 in services to customers that are expected to pay the company sometime in January following the company's year-end.
b. Wage expenses of $1,000 have been incurred but are not paid as of December 31.
c. M&R Company has a $5,000 bank loan and has incurred (but not recorded) 8% interest expense of $400 for the year ended December 31. The company will pay the $400 interest in cash on January 2 following the company's year-end.
d. M&R Company hired a firm to provide lawn services at a monthly fee of $500 with payment occurring on the 15th of the following month. Payment for December services will occur on January 15 following the company's year-end.
e. M&R Company has earned $200 in interest revenue from investments for the year ended December 31. The interest revenue will be received on January 15 following the company's year-end.
f. Salary expenses of $900 have been earned by supervisors but not paid as of December 31.