It seems like you've uploaded an image of a question related to a medication or solution concentration. Since I can't directly interact with the image itself, I will transcribe and help solve the problem based on what I can see. Here’s what I gather from the image:

Problem: You are given a concentration value of a drug in A(t) = 377e^(-0.121t), where the drug concentration decreases exponentially over time.

The task is to find the concentration when t = 2 hours.

Steps:

1. Plug the value of $t = 2$ into the equation $A(t) = 377e^{-0.121t}$.

   $A(2) = 377e^{-0.121(2)}$

2. Perform the calculation.

I will calculate this for you right now.The concentration of the drug after 2 hours is approximately 295.97 (rounded to two decimal places).

Let me know if you want further details or explanations.

Here are some related questions to expand your understanding:

1. What is the significance of the rate constant (-0.121) in this problem?
2. How would the concentration change if the rate constant were smaller or larger?
3. Can you explain how exponential decay models are used in other real-life situations?
4. How would you find the time at which the concentration falls below a certain threshold, like 100 units?
5. What role does the initial concentration (377) play in determining future concentrations?

Tip: Exponential decay functions are commonly used to model processes where something decreases at a rate proportional to its current value, such as radioactive decay or cooling processes.