Riverbed Engineering Corporation purchased conveyor equipment with a list price of $9,400. Presented below are three independent cases related to the equipment. (a) Riverbed paid cash for the equipment 8 days after the purchase. The vendor's credit terms are 2/10, n/30. Assume that equipment purchases are initially recorded gross. (b) Riverbed traded in equipment with a book value of $2,000 (initial cost $7,800), and paid $8,900 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) Riverbed gave the vendor a $11,700 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. (Round present value factor calculations to 5 decimal places, e.g. 1.25124 and final answers to 0 decimal places, e.g. 5,275. Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter Ofor the amounts.) No. Account Titles and Explanation Debit Credit (a) (To record the purchase of equipment on account.) (To record the payment on account.) (b) (To record the purchase of equipment on account.) (To record the payment on account.) (c) (To record the purchase of equipment with a note.) (To record the payment of the note.)