exam Maths Puzzle Numerical Ability

A cliff diver in Acapulco, Mexico, dives from about 17m above the water. The diver's height above the water h, in metres, after t seconds is modelled by
h= -4.9t squared + 1.5t +

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exam Other Question
Write an equation of the line that passes through (2,-7) and is parallel to the line x=5. Kevin is three times as old as Bob. Three years ago the sum of their ages was 22yr. How old is each now?