I need help :( If you are not sure please say so because if I get it wrong it sets me back about an hour. I am also throwing 40 point out.

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.)

Why do interests rates on loans to be lower in a weak economy than in a strong one

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.