exam Maths Puzzle Numerical Ability

mr. white saved $30 by taking advantage of a 12% reduction on a television set. what would have been the price without the discount?

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exam Other Question

Write as a singlel logorithm:
-2log(base 3)(1/x)+(1/3)log(base 3)(sq. root of x)
add and express in simplest form

x^2/x+9 + x-72/x+9

Thanks for the help