Sure! I can help you with that.
The formula b=27a is used to estimate the minimum furnace output (b) in BTUs for a modern house with a square footage of flooring (a).
To find the minimum furnace output in BTUs, you need to know the value of a, which represents the square footage of flooring in the house. By plugging this value into the formula, you can calculate the corresponding minimum furnace output in BTUs.
For example, let's say the square footage of flooring (a) is 1000. To find the minimum furnace output (b), you can substitute the value of a into the equation:
b = 27 * a
b = 27 * 1000
b = 27,000
So, in this case, the minimum furnace output would be 27,000 BTUs.
Now, let's talk about the value of A. In the given context, A represents the square footage of flooring in the house. It's a variable that can take any value depending on the size of the house. To find the value of A, you need to know the specific square footage of the flooring in the house that you're interested in. Once you have that value, you can substitute it into the formula to get the corresponding minimum furnace output in BTUs.
I hope this explanation helps! Let me know if you have any further questions.