The graph below represents the total cost of using a computer in a lab. Computer Lab
Total Cost
(in dollars)
35
30
25
20
15
10
5
1 2 3 4 5 6 7 8 9 10
Hours
Which equation most accurately reflects the relationship between the number of hours in the lab and the total
cost of using the computer lab?
A y = 2.50x + 5.00
B y = 5.00x + 2.00
C y = 2.50x + 3.50
D y = 3.00x + 2.50

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

Aquadrilateral has exactly 3 congruent sides davis claims that the figure must be a rectangle why is his claim incorrect.

If you eat 4 medium strawberries, you get 48% of your daily recommenced amount of vitamin c. what fraction of your daily amount of vitamin c do you still need?