Carla Vista Co$.$ gathered the following information on power costs and factory machine usage for the last six months:

$\backslash$table$[[$Month$,$Power Cost,Factory Machine Hours$],[$January$,$$$26,290,14,800],[$February$,33,055,19,400],[$March$,30,845,17,700],[$April$,24,185,14,100],[$May$,21,790,12,500],[$June$,18,700,9,500]]$

Using the high$-$low method of analyzing costs, answer the following questions and show computations to support your answers.