Higher November 2024 Paper 5 Q4
4 An electrician charges £30 per visit plus £22 per hour.
Write an expression for the cost, in £, charged by the electrician for one visit lasting \(n\) hours. [2]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(30 + 22n\) oe final answer | 2 | B1 for final answer \(30 + kn\) or \(k + 22n\) (\(k \gt 0\)) or for correct answer seen then spoiled If 0 scored, SC1 for \(30 + 22^n\) | Ignore units Condone poor notation, use of other letters for 2 marks or B1 e.g. \(30 + 22 \times n\), \(30 + 22y\), \(n = 30 + 22n\) |