Phil Wrote:Can't we just start at the bold equation since the question doesn't care how much the bat costs. It is just asking what x is when x + (x + 100) = 110.
You need the two equations ubove that to get to the bold eqution.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell