F r e e points but tell me what is this​

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.)

Can you me find the missing length. i attached an image.

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?