The diagram shows a thermometer, with a circular dial, that records temperatures in °C. [Figure 12.1]

1. (a)Write down the temperature indicated by the pointer.[1]
2. (b)When the temperature increases from -20 °C to 40 °C, the pointer turns through an angle of 300°. Calculate the angle through which the pointer turns when there is a 7 °C rise in temperature.[1]
3. (c)On one particular day, the temperature at 1 a.m. was 4°C. By 6 a.m. it had fallen by 9 °C. Calculate the temperature at 6 a.m.[1]

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