-2/3(-2/3x^3+2x-1/3x+1)^3+4(-2/3x^3+2x-1/3x+1)^2-19/3(-2/3x^3+2x-1/3x+1)+3
Thank you Adric, I really needed a formula for a composite function written on my door.
:-)

This one was written just below her shoulders. She vaguely remembered doing composite functions at school. She did not remember ever doing something that long.
Another formula was written almost at ground level.

sqrt(sqrt(k+x)x7/420 +K/ 66+x -17h=0
I think you meant 68+x, not 66.
I was wondering if you would notice that.