My bank balance can be modeled by
B(t) = 5,000 − 400t
dollars, where t is time in days since I opened the account. The balance on my account is
---Select---
by $400 per day.

The balance on your account is **decreasing** by $400 per day.

Explanation:
- The given function is $ B(t) = 5000 - 400t $, where $ B(t) $ is the balance, and $ t $ is time in days.
- The term $-400t$ indicates a **decrease** of $400 for every day, since the coefficient of $ t $ is negative.

Would you like further details or have any questions?

Here are 5 related questions:
1. What will your balance be after 10 days?
2. How long will it take for your balance to reach $0?
3. How would the function change if your balance decreased by $300 per day?
4. What is your initial balance at $ t = 0 $?
5. How can you graph the function $ B(t) $ to visualize the change?

**Tip:** To find how fast something is changing, always look at the coefficient of the variable representing time!

My bank balance can be modeled by B(t) = 5,000 − 400t dollars, where t is time in days since I opened the account. The balance on my account is ---Select--- by $400 per day.

Learn how to model your bank balance using the linear function B(t) = 5000 - 400t, where your balance decreases by $400 per day. This problem explores key concepts in linear functions and rate of change, suitable for students in Grades 6-8.

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