please provide complete steps.. these are subparts of same problem so do all.

2.29 Find the accumulated value at the end of 12 years of a fund where $1,000 is deposited at the beginning of each year for the first 4 years, $2,000 is de- posited at the beginning of each year for the subsequent 4 years, and $3,000 is deposited at the beginning of each year for the final 4 years. Express your answer in terms of a sum of accumulated values . 2.30 Let 8(t) = (2+t)-1,t > 0. (a) Find v(t). (b) Find az 2.31 Deposits of $1,000 per year are placed into a fund continuously for 20 years at 4% force of interest. After 20 years, annual withdrawals commence and continue for 30 years at the same effective rate of interest, with the first pay- ment to be made 1 year after the last deposit. Find the amount of each-with- drawal