1. Find the range of this data set: 225, 342, 288, 552, 263 2. Find the median of this data set: 476, 234, 355, 765, 470 3. Find the mode of this data set: 16 7 8 5 16 7 8 4 7 8 16 7 4. Find the range of this data set: 64 76 46 88 88 43 99 50 55. 5. Reasoning Would the mode change if a 76 were added to the data in Exercise 4? Please help!!!

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.