I was ask a question recently that really I couldn't answer:
How much does 1 inch of manifold pressure lift?
Those aren't scientific rules you can look up in a chart or in the pilots handbook. They aren't published by the manufacturer. They are rules of thumb or rules of experience.
Load up to 1300 lbs take-off weight, pull into a hover, you may see 22". Add 50 lbs, maybe it's 23" in a hover now, or something. So someone came up with the "X lbs per inch of MAP" rule.
That's where that comes from. It's not accurate, nor is it valid under all circumstances. Same goes for the temperature "rule". To find the answer for your question, assuming this is from a quiz that you got from a flying school, look in your notes that you got from the school. It's probably in there somewhere.