The half life of a certain radioactive material is 68 hours an initial amount of the material has 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

In a sample of 200 residents of georgetown county, 120 reported they believed the county real estate taxes were too high. develop a 95 percent confidence interval for the proportion of residents who believe the tax rate is too high. (round your answers to 3 decimal places.) confidence interval for the proportion of residents is up to . would it be reasonable to conclude that the majority of the taxpayers feel that the taxes are too high?

What is the measure of angle tvu shown in the diagram below

Which expression gives you the distance between the points (5,1)and(9,-6)