exam Maths Puzzle Numerical Ability

Find the domain of the function f(x) = ln(12x - 48).

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exam Other Question

Someone invested $24,00 at 8% and the rest at 7.2%. How much did they invest at each same rate if their income from 8% is 2/3 that of 7.2% At 10:00 A.M. a car leaves a house at a rate of 60mi/h. At the same time another car leaves the same house at a rate of 50mi/h in the opposite direction. At what time will the cars be 330 miles apart?