Question 3
(i) The first term of an arithmetic sequence is − 8 and the common difference is 3.
(a) Find the seventh term of the sequence.
(b) The last term of the sequence is 100. How many terms are there in the sequence?
(ii) The fifth term of a geometric sequence is 48 and the ninth term is 768. All of the terms are positive:
(a) Find the common ratio.
(b) Find the first term.
(c) Find the sum of the first ten terms.