6. (16 points) Ms. Porsha opens a saving account with a deposit of $1,800. She deposits $1700 two years later, $1500 three years later respectively. The account grows by compound interest at yield rate of I such that there is a balance B = $9418.13 at year 6. 1800 1700 1500 0 2 3 n-6 years) Balance B -$9418.13 a) Write a correct equations to solve for i at t = 6; b) Write a correct equations to solve for v at t = 0; c) Find the Dollar-weighted Yield Rate of the Interest i=; d) Write the process on TI-Calculator how to find i in 6c)