exam Maths Puzzle Numerical Ability

APPLICATIONS OF FACTORING
use the formula, h= rt - 4.9t^2

In howmany seconds after it is thrown upward from the ground with an initial speed of 34.3m/s will the object be 49m above the ground?
Could you explain this please?

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exam Other Question

4x - 9 = 3x + 2 A square-shaped picture measures 5 1/2inches along each edge. what is are of the picture?