I desperately need help with what I am missing and the best formulas to use to find the answers myself. I am having a very difficult time remembering everything. So any help in getting the right direction would help drastically. I first posted the question and will post what I have done so far to show where I am stuck and what I am missing in the comments. Thank you!

Record the following transactions of Fashion Park in a general journal. Fashion Park must charge 7 percent sales tax on all sales. The company uses the perpetual inventory system. (Round your intermediate calculations and final answers to the nearest whole dollar value.)

DATE			TRANSACTIONS
2019
April	2		Sold merchandise for cash, $2,670 plus sales tax. The cost of merchandise sold was $1,670.
	3		The customer purchasing merchandise for cash on April 2 returned $335 of the merchandise; provided a cash refund to the customer. The cost of returned merchandise was $235.
	4		Sold merchandise on credit to Jordan Clark; issued Sales Slip 908 for $1,220 plus tax, terms n/30. The cost of the merchandise sold was $715.
	6		Accepted return of merchandise from Jordan Clark; issued Credit Memorandum 302 for $235 plus tax. The original sale was made on Sales Slip 908 of April 4. The cost of returned merchandise was $260.
	30		Received payment on account from Jordan Clark in payment of her purchase of April 4, less the return on April 6.