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CHAPTER 7 SEQUENCES AND
SERIESWITH SECTION 1.1By: Sydney Connella, Willy
Ospina, Jake Wenlock, Alex Nagano
7.1 Arithmetic Sequences A sequence is a set of
quantities arranged in a definite order.
An arithmetic sequence has 10 as its first term and a common difference of -4. Find its 12th term.
7.2 Geometric sequences Sequences where each term is obtained by
multiplying the previous one by a fixed quantity are known as geometric sequences.
The term v1, of a geometric sequence is 10 and its fourth term v4 is 156.25
Find the common ration, r of the geometric sequence.
Given that Tn is the sum of the first n term of the geometric sequence. Calculate T7 the sum of the first seven terms of the geometric sequence
7.3 Currency conversions Set up proportions Susi leaves Thailand and travels to
Indonesia. She has 15000 Thai baht (THB) and uses these to buy Indonesian rupiah (IDH). The exchange rate is 3.28352 THB buys 1000 IDR. Calculate the total number of Indonesian rupiah Susi receives.