Can someone help me with this math problem plz

On a piece of paper graph y < 3x

Name the most appropriate metric unit for each measurement like the mass of cow

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed