Please explain your answers a step by step.

What single amount on April 1, 2012, is equivalent to a series of equal, semiannual cash flows of $2500 that starts with a cash flow on January 1, 2010, and ends with a cash flow on January 1, 2019? The interest rate is 4% and compounding is quarterly What single amount on October 1, 2012, is equal to a series of $2500 quarterly deposits made into an account? The first deposit occurs on October 1, 2012, and the last deposit occurs on January 1, 2026. The account earns 6% compounded continuously