Anyways i litterally want to "fight" david like so bad ong

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?

Factor and solve to find roots x squared -x - 90 =0

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1