P7-1A River Company's chart of accounts includes the following selected accounts. 101 Cash 401 Sales Revenue 112 Accounts Receivable 414 Sales Discounts 120 Inventory 505 Cost of Goods Sold 301 Owner's Capital On April 1 the accounts receivable ledger of River Company showed the following balances. Summer $1,550, Glav $1,200, Sheppard Co. $2,900, and Book $1,800. The April transactions involving the receipt of cash were as follows. Apr. 1 The owner, T. River, invested additional cash in the business $7.200. 4 Received check for payment of account from Book less 2% cash discount. 5 Received check for $920 in payment of invoice no. 307 from Sheppard Co. 8 Made cash sales of merchandise totaling $7,245. The cost of the merchandise sold was $4.347. 10 Received check for $600 in payment of invoice no. 309 from Summer. 11 Received cash refund from a supplier for damaged merchandise $740. 23 Received check for $1,500 in payment of invoice no. 310 from Sheppard Co. 29 Received check for payment of account from Glav. Instructions (a) Journalize the transactions above in a six-column cash receipts journal with columns for Cash Dr., Sales Discounts Dr., Accounts Receivable Cr., Sales Revenue Cr.. Other Accounts Cr., and Cost of Goods Sold Dr./Inventory Cr. Foot and crossfoot the journal. (b) Insert the beginning balances in the Accounts Receivable control and subsidiary accounts, and post the April transactions to these accounts. (c) Prove the agreement of the control account and subsidiary account balances