Your savings account pays 1% interest and inflation is 0.5% what's your real rate of return

0,5%

Explanation:

Real income will be the result of nominal income less inflation. The nominal income is the amount resulting from the nominal interest rate at which your money is invested. For example, an investment of $ 100 at a nominal interest rate of 1% will have a nominal yield of $ 1. If inflation is 0.5% you should discount this from nominal income to find real income. In this case, the real interest rate would be 0.5% and the real yield would be $ 0.50.

0.5%

Explanation:

Real Rate = Nominal Rate - Inflation Rate

? = 0.5 - 1

0.5

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.