I believe the answer is 57
To find the answer, use
, and then use the equation To find it's half life.
The answer would be positive 24. The reason being is because of the fact that two negatives when multiplied cancel the negative. Also 12 * 2 is 24 so yeah
I think you are correct actually.
To rewrite it as a single exponent we have to simply add the exponents since we have an equal base.
The answer is 9^7