The payback period for a project is the number of years needed for a project’s future profits to pay back the project’s initial investment. A project requires a $300 million investment at Time 0. The project yields profit for 10 years, and Time 1 cash flow will be between $30 million and $100 million. Annual cash flow growth will be from 5 percent to 25 percent a year. How does the project payback depend on the Year 1 cash flow and cash flow growth rates?