Mazie Supply Co. uses the percent of accounts receivable method. On December 31, it has outstanding accounts receivable of $141,500, and it estimates that 6% will be uncollectible. Prepare the year-end adjusting entry to record bad debts expense under the assumption that the Allowance for Doubtful Accounts has: (a) a $2,406 credit balance before the adjustment. (b) a $708 debit balance before the adjustment.

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answer: marginal utility of the fourth brownie is 0.

explanation: marginal utility is the addtional utility gained from the consumption of one more unit of a good. it is given by,

so, marginal utility at the 4th unit will be given by

since, the values are not given here, you can simply find marginal utility at fourth unit by subtracting total utility at 3rd unit from total utility at 4th unit.