exam Maths Puzzle Numerical Ability

I need help with truth tables. See question below. The symbol -> is an arrow for if...then.

Construct a truth table for (~q^p)->~q

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exam Other Question

A REGIMENT OF SOLDIERS ,WHEN FORMED INTO A SOLID SQUARE , HAS 45 SOLDIERS FEWER IN THE FRONT THAN WHEN FORMED INTO A HOLLOW SQUARE 5 DEEP.FIND NUMBER OF SOLDIERS. Hi. My problem is with graphing the following equation:
f(x)=x^2
My teacher told me the f is the y of the problem. Plz help me. Thx in advance