Evelyn packed this box with 1 inch cubes which expression does not show how Evelyn can find the volume of the box

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?

What is the factor form of x^2-9x+14

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2