Does anyone wanna talk I am bored lol

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 graph depicts the path of a projectile

Factor the polynomial expression x6 – x3 – 20