exam Maths Puzzle Numerical Ability

You are offerd two different credit cards. Card A charges $75 per year and 15% interest on your average balance. Card B chages $15 per year and 18% interest on your average balance

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exam Other Question
Show the difference between a four-digit number and its reverse is divisible by 9 f(x)=-2x^2+11x+7

find the line of symmetry of the given function.