Answer and Explanation:
The presentation of the operating expense budget is presented below:
Particulars       October    November   December   Â
Budgeted sales   $25,000    $26,250     $27,562.5
                      ($25,000 × 1.05)  ($26,250× 1.05)
Salary Expense   $1,500      $1,500     $1,500       Â
Rent expense    $1,000       $1,000     $1,000       Â
Depreciation
expense        $400         $400      $400       Â
Sales Commission $2,500 Â Â Â Â Â $2,625 Â Â $2,756
             ($25,000 ×10%)  ($26,250 × 10%) ($27,562.50 × 10%)
Advertising expense $2,000 Â Â Â $2,100 Â Â Â $2,205
        ($25,000 ×8%)  ($26,250 × 8%) ($27,562.50 × 8%)
Miscellaneous expense $1,250 Â Â $1,312.5 Â Â $1,378
     ($25,000 ×5%)  ($26,250 × 5%) ($27,562.50 × 5%)
Total Monthly expenses $8,650 Â $8,937.5 Â $9,239