Tenzin walks in the mountains. She has a rule to estimate the temperature at different heights on a mountain. The temperature at a height of 800 metres on a mountain is $$\(6{ }^{\circ} \mathrm{C}\)$$. (a) Use Tenzin's rule to work out an estimate of the temperature at a height of 2000 metres on the mountain. $$\({ }^{\circ} \mathrm{C}\)$$ (3)

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