We were given a graphing calculator. I don't know why. I programmed these and, when I finished, in the context of Math 12, here's my ratings.

ARITHSER.83P	Arithmetic Series	Slightly useful.
ARITHTRM.83P	Arithmetic Term	Slightly useful.
CUBIC.83P	Cubic Polynomial	Forget what it does.
DISTANCE.83P	Distance	Fairly useful.
DIVPOLYN.83P	Divide Polynomials	Slightly useful.
FACTOR.83P	Factor Polynomials	Very useful.
GEOSEQ.83P	Geometric Sequences	Slightly useful.
MIDPOINT.83P	Midpoint	Fairly useful.
PERCDIFF.83P	Percentage Difference	Fairly useful.
RECURSE.83P	Recursive Series	Slightly useful.
SEQNSERI.83P	Sequences and Series	Slightly useful.
SOLVETRI.83P	Solve a Triangle	Very useful.
STDQUAD.83P	Standard Form Quadratics	Very useful.
Z3D.83P	Z3d	Useless 3d graphics engine.