The half-life of a certain radioactive material is 68 hours. an initial amount of the material has a mass of 641 kg. write an exponential function that models the decay of this material. find how much radioactive material remains after 4 hours. round your answer to the nearest thousandth.

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Rectangle bcde is similar to rectangle vwxy. what is the length of side vy? a) 1 7 b) 2 7 c) 3 7 d) 4 7

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74