Aggregate demand is defined as
a. the total amount of goods and services available in the economy at all possible price levels.
b. the market value of all final goods and services produced within a country in a given period of time.
c. the total amount of goods and services in the economy that'll be purchased at all possible price levels.
d. the dollar value at current market prices of all final goods and services produced annually by factors of production owned by residents of a given

Your sister turned 35 today, and she is planning to save $60,000 per year for retirement, with the first deposit to be made one year from today. she will invest in a mutual fund that's expected to provide a return of 7.5% per year. she plans to retire 30 years from today, when she turns 65, and she expects to live for 25 years after retirement, to age 90. under these assumptions, how much can she spend each year after she retires? her first withdrawal will be made at the end of her first retirement year.