((Please help me figure out account titles and the number answers that are marked in red))

I have tried everything, but can't figure it out Im really struggling.

Thank you.

Riverbed Corp. uses a perpetual inventory system. The company had the following inventory transactions in April. April 3 Purchased merchandise from DeVito Ltd. for $35,000, terms 2/10,n/30, FOB shipping point. 6 The appropriate company paid freight costs of $650 on the merchandise purchased on April 3. 7 Purchased supplies on account for $4,100. 8 Returned merchandise to DeVito and received a credit of $3,000. The merchandise was returned to inventory for future resale. 30 Paid the amount due to DeVito in full. \begin{tabular}{l} Date Account Titles and Explanation \\ Apr. 3 Inventory \\ \hline \end{tabular} \begin{tabular}{l} Debit \\ \hline 35000 Credit \\ \hline \end{tabular} Accounts Payable 35000 Apr. 6 Inventory 650 Apr. 7 4100 Accounts Receivable Apr. 8 Accounts Payable 3000 Accounts Receivable 4100 Apr. 30 Cash 4100 Accounts Receivable 4100