Which relationship is a function? teachers and their pets
Output
Input
January
30 tons
Ms. Valverde
Mr. Fanning
February
28 tons
March
25 tons
dog
cat
fish
Input
Output
Input
Output
9
6
7
10
12
13

What is the length of bc ? enter your answer in the box. bc =

On a piece of paper graph f(x)=5•(0.4)^x

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