Posted by elaine on Tuesday, December 22, 2009 at 12:12am.
The formula b=30a is used in New England to estimate the minimum furnace output,b, in BTU's for a modern house with a sq ft of living, determine the minimum furnace output in BTU's and solve for formula a

algebra  bobpursley, Tuesday, December 22, 2009 at 8:51am
divide each side by 30
a=b/30