Please help me answering 3 and 4 abc

Please send the solution on paper

It is annuity as geometric series

MCR3U sequences, and series. 2. Explain how the present value of annuities is related to interest, sequences, and series. 3. The timeline below shows an annuity with an interest rate of 12%. NW 1 2 3 4 300 800 a a sec | iannumy sacrum): anemia)3 a) What was the length of the investment? How do you know? b) How often was interest calculated? How do you know? 0) How can this annuity be represented as a geometric series? Explain. 4. The timeline below shows an annuity from which withdrawals are made for 16 years. \"I O Explain. 4. The timeline below shows an annuity from which withdrawals are made for 16 years. \"W 1 2 3 __ 31 32 1200 1200 1200 1200 1200 a) What is the annual interest rate? How do you know? b) What is the value of each withdrawal? How do you know? 0) How many withdrawals are made? How do you know? d) How can this annuity be represented as a geometric series? Explain