a. You want to purchase a new truck that will cost $18,000. You currently have $12,000. You can earn 7% interest. How long until you will be able to buy the truck?

b. You are looking at an investment that will pay $10,000 in 18 years if you invest $2,500 today. What is the implied rate of interest?

c. You made an investment 5 years ago that is now worth $9,835.76. If the investment earned 6% per year, how much was the original investment?