Can someone me with this math problem

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.)

Easy points boii. read it. ya. fresh

Which of the following represents the range of the graph of f(x) below