Consider point \(A=(a,2)\) with \(a > 0\) such that over all points \(P\) on the line \[\frac{x}{4}+\frac{y}{3}=1,\] the minimum value of \(\overline{AP}\) is \(2.\) What is the value of \(3a?\)

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Given a point \(P\) on the positive \(x\)-axis such that the distance between \(P\) and the line \(4x+3y+6=0\) is \(10,\) what are the coordinates of \(P ?\)

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If real numbers \(\ a\ \) and \(\ b\ \) satisfy \( a^2 + b^2 = 49 \), what is the distance between the lines \[ ax + by = 1\;\;\; \textrm{and} \;\;\; ax + by = 225 ?\]

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