Suppose that in a week the price of ground beef decreases from $5.00 to $4.00 per pound. at the same time, the quantity of ground beef demanded at a typical grocery store increases from 9,000 to 12,000 pounds per month. what is the price elasticity of demand for ground beef?

After graduation, you plan to work for dynamo corporation for 12 years and then start your own business. you expect to save and deposit $7,500 a year for the first 6 years (t = 1 through t = 6) and $15,000 annually for the following 6 years (t = 7 through t = 12). the first deposit will be made a year from today. in addition, your grandfather just gave you a $32,500 graduation gift which you will deposit immediately (t = 0). if the account earns 9% compounded annually, how much will you have when you start your business 12 years from now?