exam Maths Puzzle Numerical Ability

Find the equation of the parabola described: Focus at (0,2); vertex at (0,0). Graph the parabola and the directrix.

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Simplify this: a- c/2a / a+c/2a; reduce numerator to unity:x+y / 7xx-7yy;
2/a+3 - 3/2a+6 + a+2 / aa+6a+9; a banana has 85 calories.This is 10 calories less than one eighth of the calories in a banana split.How many calories are in a banana split?