book Maths Puzzle Numerical Ability

A child throws a ball up a hill that makes an angle of 45 degrees with the horizontal. the ball lands 100 feet up the hill. Its trajectory is a parabola with the equation y=-xsquar

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book Other Question

Algebraically show whether the point M(2,-3) is on the line defined by
3x - 6y + 1 = 0

Can i please get some help with this question? A chef prepared five chocolate tortes for a dinner party. The guests consumed 2 3/16 tortes. How many tortes are left?