I expect to earn 10 percent per year on my retirement investments. At the end of each of the next 40 years, I want to put the same amount of money in my retirement portfolio. How much money do I need to put in each year if I want to have $2 million in my account when I retire?

I am managing a conference at my college. My fixed costs are $15,000. I must pay the 10 speakers $700 each, and the college union $300 per conference participant for food and lodging costs. I am charging each conference participant who is not also a speaker $900, which includes the conference fee and their food and lodging costs. How many paid registrants need to attend for me to break even?

Suppose you are borrowing $500,000 and are making annual payments for 20 year each year. What annual interest rate corresponds to this situation (Hint: this is a present value problem)?

It is April 15, and so far this month we have sold $35,000 worth of merchandise. Our quota is to sell $72,500 worth of units in April. If we charge a price p for our product, we will sell 800-4p units during the rest of the month. What price would enable us to meet our April revenue quota?