Could someone please answer this question for me

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

Witch represents the inverse of the function f(x)=1/4x-12

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl