Foundation November 2018 Paper 3 Q14
14
(a) The term-to-term rule of a sequence is
| Add 8 and divide by 2 |
The first term of the sequence is \(\ -24\)
Work out the next two terms. [2 marks]
(b) The term-to-term rule of a different sequence is
| Subtract 1 and multiply by 5 |
The third term of this sequence is 120
\[\ldots\ldots \qquad \ldots\ldots \qquad 120\]Work out the first term. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| –8 | B1 | |
| 0 | B1ft | ft their –8 |
Additional guidance
| Mark answer line first If either part of answer line is blank look for terms in working | |
| –20 and –6 | B0B1ft |
| –20 and –16 | B0B0ft |
| Answer | Mark | Comments |
|---|---|---|
| \(\div 5\) then \(+ 1\) | M1 | implied by 2nd term 25 or correct first term for their 25 |
| 6 | A1 |
Additional guidance
| 6, 25 with no working seen or on dotted lines | M1A1 |
| 2nd term 23 and 1st term 5.6 is the correct first term for their 25 | M1A0 |
| 25 with no incorrect working | M1 |