Last Wednesday, Bradley had $15. Over the weekend he received $25 for gardening. How much
does Bradley have now?

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.)

Will give brainliest what is the value of x? enter your answer in the box.

This is so hard and it’s for a test