A. Download the printable diagram of the real number system. B. Find 10 numbers in the real world, with at least one number from each of the categories in the diagram. Post your number set to the discussion board. (In your post, don't label your numbers with their categories.) C. View another student’s number set and choose 5 numbers to place into your diagram. Choose numbers that another student has not used in his or her diagram. Explain your placement of each number. Post a scan or a picture of your diagram in your response. D. Go to another student’s post and choose another 5 numbers. Place them into your diagram and explain your placement. Also post a scan or a picture of your diagram in your response. You can use the same diagram you used for the first 5 numbers. Just label each student's numbers.

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

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?

What is the product? a-3/15a × 5/a-3