I need assistance in understanding where the mistake was made. If at all possible, if the answers could be in the same format as the photos it would be much appreciated.

Mainly, if the work could be shown/explained, that would be exceedingly helpful. Thank you!

Pharoah Windows manufactures and sells custom storm windows for three-season porches. Pharoah also provides installation service for the windows. The installation process does not involve changes in the windows, so this service can be performed by other vendors. Pharoah enters into the following contract on July 1. 2020, with a local homeowner. The customer purchases windows for a price of $2,410 and chooses Pharoah to do the installation. Pharoah charges the same price for the windows irrespective of whether it does the installation or not. The installation service is estimated to have a standalone selling price of $610. The customer pays Pharoah $2,020 (which equals the standalone selling price of the windows, which have a cost of $1,140 ) upon delivery and the remaining balance upon installation of the windows. The windows are delivered on September 1, 2020, Pharoah completes installation on October 15,2020 , and the customer pays the balance due. Prepare the journal entries for Pharoah in 2020. (Credit account titles are outomatically indented when the amount is entered. Do not indent manuolly. If no entry is required, select "No entry" for the account titles and enter 0 for the amounts. Round answer to 0 decimal places, e.g. 5,125.) \begin{tabular}{lll|l|l|} \multicolumn{1}{c}{ Date } & Account Titles and Explanation & Debit \\ \hline Jul. 1.2020 & No Entry & Credit \\ \hline No Entry & 0 \\ \hline \end{tabular} (To record contract entered into) Accounts Receivable 390 Sales Revenue Unearned Service Revenue (To record sales) Cost of Goods Sold (To record cost of goods sold) Oct: 15,2020 v Cash 390 Unearned Service Revenue \begin{tabular}{|} 840 \\ \hline \end{tabular} Accounts Receivable 390 Service Revenue 840