Are the following expressions equivalent?

A. 3x - 2x + 0.5x3x−2x+0.5x.
a. 1.5x1.5x

Liesl grew 7/12 of a foot in one year. her little sister grew 1/3 of a foot during that same year. how much more did liesl grow than her little sister did

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.