Which one is NOT an answer to the graph of this piecewise function? To clarify the blurry video,
the x-axis starts at -5 and goes up to 5 in one
unit increment; the y-axis goes from -5 and in
unit increments reaches 5.

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 graph shown is the graph of which function?

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.