The amount of a certain radioactive substance remaining, in grams, after days can be modeled by the equation . Which of the following statements is the best interpretation of the number 0.92 in this context?
The initial amount of the substance was 0.92 grams.
The substance decays by 92% each day.
The substance decays by 8% each day.
The amount of substance remaining is 92% of the previous day's amount.
