Fa(x) and b(x) are linear functions with one variable, which of the following expressions produces a quadratic function?

You don't show the details but you would have to multiply two linear equations to produce a quadratic equation.  ex:

y2*y1=(ax+b)(cx+d)=acx^2+(ad+bc)x+bd

Ifound this on google “a skewed (non-symmetric) distribution is a distribution in which there is no such mirror-imaging. a "skewed right" distribution is one in which the tail is on the right side. a "skewed left" distribution is one in which the tail is on the left side. the above histogram is for a distribution that is skewed right.” i hope this you for what your looking for