Which of the following are polynomial functions?
Choose all that apply.

A.
B.
C.
D.
E.

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.