Sweet Engineering Corporation purchased conveyor equipment with a list price of $9,000. Presented below are three independent cases related to the equipment. (a) Sweet paid cash for the equipment 8 days after the purchase. The vendors credit terms are 2/10, n/30. Assume that equipment purchases are initially recorded gross. (b) Sweet traded in equipment with a book value of $1,900 (initial cost $8,400), and paid $10,100 in cash one month after the purchase. The old equipment could have been sold for $400 at the date of trade. (The exchange has commercial substance.) (c) Sweet gave the vendor a $11,500 zero-interest-bearing note for the equipment on the date of purchase. The note was due in one year and was paid on time. Assume that the effective-interest rate in the market was 9%. Prepare the general journal entries required to record the acquisition and payment in each of the independent cases above.