Divide 12by8 and 4by3​

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

15 point ! ~ see if you know the answer to both you!

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin