1. What is the Present Value for $15,000 in 30 years at discount rate of 12%?

1. XYZ mutual fund has an average 6% annual rate of return. How much money you could make in 20 years if you invest 80,000 at it?

1. John is 35 years old right now. He needs $1,000,000 at age of 65 to retire. If his 401K account can generate an average annual rate of return of 6%, how much money he needs to put in right now?

1. John is 35 years old right now. He needs $1 million at age of 65 to retire. If he could put $1600 into his retirement account such as company 401K every month. And his investments could generate 5% annually. Can he reach his goal of $1 million When he retires?

1. Steve started an online store at ebay selling graphic t-shirts. In order to have mobile internet access, he subscribed AT&T mobile broadband $79 per month. Steve purchased the t-shirt from whole sale price of $6.50 and sells it for $19.99 at ebay. Also each t-shirt costs him $7 to design and print. Please calculate the break event point for Steve's t-shirt business.

1. DSU mem's basketball team raised ticket price from $15 to $18 last season. The ticket sales dropped from average 4,500 to 4,100 per game. (1) Please calculate the price elasticity of demand. (2) calculate the revenue change after the price drop.