Answer:
$2,100
Explanation:
Data provided in the question 
Prepaid rent account before adjustment at the end of the month = $2,800
And, the monthly rent is $700
So, the amount of prepaid rent after adjustment is 
= Prepaid rent account before adjustment at the end of the month - the monthly rent 
= $2,800 - $700
= $2,100
Basically we deduct the monthly rent from the prepaid rent balance before adjustment 
 
        
             
        
        
        
Answer and Explanation:
The Journal entry is shown below:-
September 9
Petty cash fund Dr, $400
      To Cash $400
(Being establishment of petty cash fund is recorded)
Here we debited the petty cash fund as assets is increasing while we credited the cash is decreasing.
September 30
Merchandise Inventory Dr, $51
Postage expense Dr, $73
Cash Short and over Dr, $13
Miscellaneous Dr, $141
       To Petty Cash $278
(Being reimburse of petty cash find is recorded)
Here we debited the merchandise Inventory, postage expense, cash short and over and miscellaneous as it is expenses while we credited the petty cash as is reimbursed.
October 1 
Petty cash fund Dr, $60
($460 - $400)
      To Cash $60
(Being increase in petty cash fund is recorded)
Here we debited the petty cash fund as assets is increasing while we credited the cash is decreasing.
 
        
             
        
        
        
Marla will use the formula to find the updated cost.
=A2-A4-A6-A8-A10
Because A2 is budget and A4, A6, A8 and A10 all are expenses. So she has to budget-all expenses.
So option A=A2-A4-A6-A8-A10 is true.
<h3>What is a spreadsheet?</h3>
A spreadsheet is a computer program that can capture, display and manipulate data arranged in rows and columns. Spreadsheets are one of the most popular tools available with personal computers.
A single spreadsheet can be used as a worksheet to compile data for a purpose, or multiple sheets can be combined to create an entire workbook.
Learn more about spreadsheet here,
brainly.com/question/10509036
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A country's export ratio is the ratio of imports and exports. 
<h3>
What is the export ratio?</h3>
Export ratio is the ratio of import to export. Export would comprise of goods and services produced in the US that are been sold to foreign countries. Import would comprise of foreign produced goods and services that are been sold in the US
To learn more about imports, please check: brainly.com/question/26497713
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