How do you determine if two probabilities are conditional to each other?

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.)

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?