Name the property illustrated by each
statement.

31. If y=-3, then 7y=7(-3)

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.)

Anyone know? will mark brainliest if you're correct!

What is the volume of a cone with a height of 6 cm in the radius of 2 cm