A polynomial contains the roots 2 and 1+4i. Write the simplest polynomial function to represent the polynomial.

The graph shown is the graph of which function?

Through non-collinear points there is exactly one plane.

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?