exam Maths Puzzle Numerical Ability

find the distance between the pair of points
(20,-5)and (12,-20)

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average tuition in 1990 was $2035.00. By 2000 it had risen approx 85%. What was the approx. cost in 2000 Simplify

2x-10/x2ndpower/x2nd power - 25 divided by x2nd power -2x - 15/x2nd power - 4x - 5