exam Maths Puzzle Numerical Ability

Find the equation of the line through (-1,-7) having a slope of -6.

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As many 8-cm diameter discs as possible are cut from a sheet of rectangular cardboard measuring 170 cm by 90 cm. Find the area of the sheet that is left.

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Thank you very much. Projet Motion. if h=-16t^2+96t represents the height of a rocket, in feet, t seconds after it was fired, when will the rocket hit the ground? Hint: the rocket is on the ground when h=0.