$$Can you plz help me solve these three problems. Thank you!

Find the distance the point $P(2,4,3),$ is to the plane through the three points $Q(-2,1,2),R(-1,-2,-1),$ and $S(2,-1,3).$

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$13.$

Find an equation of the plane consisting of all points that are equidistant from $(5,-3,0$ and $(2,4,1),$ and having $-3$ as the coefficient of $x.$

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$=0$

Consider the planes given by the equations

$2x-3y-2z=1$

$4x-y3z=4$

$($a$)$ Find a vector vec$(v)$ parallel to the line of intersection of the planes.

vec$(v)=$

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$($b$)$ Find the equation of a plane through the origin which is perpendicular to the line of intersection of these two planes.

This plane is $$