exam Maths Puzzle Numerical Ability

The variables r and s represent the lengths of the legs of a right triangle, and t represents the length of the hypotenuse. Find the unknown value. Then tell whether the lengths form a Pythagorean triple.

s=16, t=34

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exam Other Question

Victor earns $3 an hour working after school and $4 an hour working on saturdays. Last week he earned $43, working a total of 13h. How many hours did he work on saturday? Evaluate h(-2/3) if h(x) =[[x-2]]

I get [[-2/3-2]]. Is the next step[[ -22/3]] or [[-1-2]]?

Please help

Thanks