IB Maths AI HL AI 1.2 Sequences and financial mathematics questions

Exam-style questions in the shape of Paper 1 and Paper 2, with full markschemes. Read the markscheme, or type, photograph or draw your answer and get it marked.

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Question 1

Paper 1Easy5 marks

A neighbourhood repair fund plans to increase its annual contribution by the same amount each year. Figure 1 shows the planned contributions for the first three years.

12304590135180225270315YearAnnual contribution (£)£180£225£270

The planned contributions form an arithmetic sequence.

(a)

Write down the first term and the common difference of the sequence.

[2]
(b)

Find the planned contribution for year 8.

[1]
(c)

Calculate the total planned contributions for the first eight years.

[2]

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