Selected transactions for BM Corporation, an interior decorating corporation (i.e., service business), in its first month of business, are shown below.

Jan. 2: Invested $15,000 cash in the business in exchange for common shares. Jan 3: Purchased used car for $2,000 cash for use in the business. Jan 15: Billed customers $1,800 for services performed. Jan 16: Paid $200 cash for advertising. Jan 20: Received $700 cash from customers billed on January 15. Jan 30: Paid salaries of $1,000 to staff.

(a) Analyze business transactions by applying accounting equation (b) Journalize business transactions.