Starting next month, I plan to invest $500 per month for 10 years to reach my goal of $100,000. What annual rate must I earn to achieve this goal?

A firm expects to make payments of 1.1, 1.5, 1.2, 1.4 and 1.9 million for a particular supply over each of the next 5 years. What constant annual payment is this equivalent to if the annual rate is 10%? That is, what is the time-value weighted average of this mixed-cash flow stream?