The formula for the volume of a cube is:
V = a^3
Plug in what we know:
125 = a^3
Cube the other side:
The 3rd or 1st one I'm not sure which one but u have an idea of what it might be
Angle 4 and 7= Interior angles
Angle 12 and 16= Corresponding angles
Angle 1 and 14= Alternate exterior angles
Angle 5 and 10=Alternate angles
angle 6 and 7 are alternate angles I think.
I would say the 60 + 20 represents how the shirts cost the same amount. Then I would say the x either represents the cost before tax or how to find the cost of the shirts.
I hope this helps!
Good Luck!