The temperature in London at midnight was −3∘C-3^{\circ}\text{C}−3∘C. By 11 am, the temperature had risen by k∘Ck^{\circ}\text{C}k∘C.
Work out the temperature at 11 am in terms of kkk.
370 exam-style questions on AQA GCSE Maths Negative Numbers. Each one has a worked solution and a mark scheme showing where the marks go.