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A light source with intensity is reduced to an intensity I after passing through x metres of fog according to the formulae es 2.72.

A light source with intensity is reduced to an intensity I after passing through x metres of fog according to the formulae es 2.72. 11 16 -0.15x where At what distance, to the nearest tenth of a metre, will the intensity be reduced to one-half of its original intensity? 21 26

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