O-LevelMathematicsAlgebra and graphs4024/11 · Oct/Nov 2018 · Q73 Marks
The value of each term of a sequence is 4 more than the value of the term before it. The third term is 17 and the fourth term is 21.
- (a)Find the first term.[1]
- (b)Find an expression for the nth term of this sequence. Give your answer in its simplest form.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2018). The mark or mark type is shown in brackets.
- 7(a) 9 [1]
- 7(b) 4n + 5 cao [2]
- B1 for 4n + k oe
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