Write 100/250 in simplest form !

You can find the constant of proportionality by finding the ratio of

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

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.