List the following in order from least to greatest

-3/5, -0.4, -1, -0.5

A(t)=728(1+0.04)^t how much money did aditya originally invest

How do you solve a question like this?

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