4. D
5. A
6. C
7. D
8. D
9. B
10. B
The starting weight of the radioactive isotope = 96 grams
Weight after one hour is half of the starting weight. So the weight of the radioactive isotope after 1 hour = 48 grams
After 2 hours the weight is half as compared to the weight after previous hour. So weight after 2 hours = 24 grams.
This means, after every hour the weight is being halved. The half life of radioactive isotope is one hour.
Since after every hour, the weight is being halved, the weight of the isotope can be modeled by an exponential equation.
So,
Initial Weight = W₁ = 96
Change factor = 1/2 = 0.5
The general equation of the sequence will be:

Here t represents the number of hours. Using various values of t we can find the weight of the radioactive isotope at that time.
We can plot the sequence using the above equation. The graph is attached below.
Answer:
Step-by-step explanation:
So, TML = 104, right?
Now, we know that TMV + LMV is 104.
We also know that TMV is 60.
Sooooo
LMV is simply 104 - 60 = 54
LMV = 54 :)
Okay, let's use some math..
So multiply first..
2.99 * 5 = $14.95 that she has spent on gas..
23 / 5 = 4.6 gallons of gas left..
But this question is asking how much she had spent on gas, so your answer will be..
She has spent $14.95 on gas..
You can correct me if I'm wrong..
I hope this helps you!
Answer:

Step-by-step explanation:
We need to find the value of 
Solving:
We know, 


a^0 = 1
so,

So, the value of 