There are 3 rest stops for every 20 miles of highway. How many rest stops would there be on 140 miles of highway?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

How can you find the mean absolute deviation (mad) for this set of data?