a) A lecture theatre has 25 rows of seats. The first row contains 30 seats, the second 32 seats the third 34 seats and so on

a. Assuming that this pattern continues, find a sequence that models the number of seats in the lecture theatre.(3 marks)

b. Find number of seats in the 20th row. (2 marks)

c. What is the total number of seats in the lecture.(3 marks)

b) Define an annuity and give 3 examples. (4 marks)

c) How much must be invested now at 9% per year compounded semiannually to find an annuity of 20 payments of sh.200 each paid every six months from now. (4 marks)

d) Solve 3×2 +5x-2=0 by completing square method. (4 marks)

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