Brainliest! what three institutions influence economics the most? explain how each influences economics and provide examples of each.

The three institutions that influence economics the most are households, businesses, and the government.

Explanation:

Households consume many of the goods produced by businesses, and the members of households are the owners of wealth. Households provide labor, land, capital, and entrepreneurial skills to businesses. Businesses do not receive profits, they are the middlemen who channel profits to the owners of the businesses. The government requires you to submit a "charter" to the state if you a corporation.

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.