May someone please kindly show the step-by-step solution by using the financial calculator or through an easy to understand method.

17. Suppose we have a series of cash flows like this: x dollar at the end of 3 months, 100 dollar at the end of 6 months, x dollar at the end of 9 months, 100 dollars at the end of 1 year, and this pattern goes on forever. We know the present value of these cash flows as of today is $1,000 when discounted at 4% compounded quarterly. Find the value of x. a) $910.99 I b) $212.12 c) - $79.11 d) - $79.90 18. Suppose there is a series of cash flows: $10 at the end of year 1, $20 at the end of year 2, and nothing at the end of year 3, $10 dollars at the end of year 4, $20 at the end of year 5, and nothing at the end of year 6, and this pattern goes for a total 99 years. Assuming EAR is 10%, how much money will be there at the end of year 99. a) $1,290,528 b) $103 c) $12,527 d) None of the above