The amount of a radioactive substance present, in grams, at time t in months is given by the formula y = 7000(2)^-0.3t Find the number of grams present in 2 years. If necessary, round to three decimal places

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.7 days. what is the probability of spending more than 2 days in recovery? (round your answer to four decimal places.)

Michael gose to a theme park and rides two different roller coasters that both begin on a raised platform his height while on the first roller coaster measured in feet from the platform height can be modeled by the following graph where t is the number of seconds since the ride began