The members of two different swim clubs swam laps on Saturday. The dot plots show the number of laps each club member completed.
Swim Club A Distances
Swim Club B Distances
:
.
4
35 40
+
45 50 55
Number of Laps
60
65
45
15
20
25 30 35 40
Number of Laps
What is the mean for Swim Club A Distances?
O 35
O 40
O 49
O 55

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 variable in a relation who’s value depends on the value of the independent variable is called what?

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]