Question

PLSSS!!!! HELP!!!!! TOKENS!!!!!



The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 120 grams of a radioactive isotope, how much will be left after
3 half-lives?

Answer 1

the half-life mean 1/2 of life
so the 3half life will meaning 3*1/2 of life

how you think it please ?

Answer 2

yes, but wouldn't that give you \[ 120 \div \frac{ 3 }{ 2 }\] which gives you 80

Answer 3

so this mean 120 halfed 3 time

120/2 = 60
60/2 = 30
30/2 = 15

so this will be understandably sure right easy now for you - yes ?

Answer 4

Yeah thanks! but how would you write that in a function?