There were no other temporary differences and no permanent differences. Pretax accounting income for 2016 was $45 million. The tax rate is 40%. The change in the temporary difference from 2015 to 2016 is

what is the actual question i have no idea how to answer this w/o a question

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.