Find two consecutive even integers such that the sum of the larger and three times smaller is 234

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 effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set