2.1 Given the quadratic sequence: 2 ; 3 ; 10 ; 23; …
2.1.1 Write down the next term of the sequence. (1)
2.1.2 Determine the nth term of the sequence. (4)
2.1.3 Calculate the 20th term of the sequence. (2)
2.2 Given the arithmetic sequence: 35 ; 28 ; 21; …
Calculate which term of the sequence will have a value of—140. (3)
2.3 For which value of n will the sum of the first n terms of the arithmetic sequence in QUESTION 2.2 be equal to the n term of the quadratic sequence in QUESTION 2.1? (6)
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