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Let's break down the questions and solve them step by step. The assignment is asking you to:

1. Identify the input and output variables for each graph and table.
2. Determine the practical domain and practical range for each.

### First Image (Page 17)

#### Graph 1: "Detroit Population over Time"
- **Input/Output and Variables:**
  - Input: Time (in years since 1970), let's call it $ t $.
  - Output: Population (in thousands), let's call it $ P $.
- **Practical Domain:**
  - The years go from $ t = 0 $ (1970) to $ t = 10 $ (1980), so the practical domain is $ [0, 10] $.
- **Practical Range:**
  - The population decreases from about 1700 (in 1970) to around 1400 (in 1980). So, the practical range is approximately $ [1400, 1700] $ in thousands.

#### Graph 2: Bank Account Balance Over Time
- **Input/Output and Variables:**
  - Input: Time in weeks, represented by $ n $.
  - Output: Amount of money in dollars, represented by $ A $.
- **Practical Domain:**
  - The number of weeks ranges from $ n = 0 $ to $ n = 12 $, so the practical domain is $ [0, 12] $.
- **Practical Range:**
  - The amount of money starts around \$75 and increases to approximately \$275. The practical range is $ [75, 275] $.

### Second Image (Page 18)

#### Graph 3: Temperature over Time
- **Input/Output and Variables:**
  - Input: Time (in years since March 2007), let’s call it $ t $.
  - Output: Temperature (°F), let’s call it $ T $.
- **Practical Domain:**
  - The graph shows time from 0 to about 10 years. So, the practical domain is $ [0, 10] $.
- **Practical Range:**
  - The temperature varies from approximately 50°F to 110°F, so the practical range is $ [50, 110] $.

#### Table: Phoenix Electric Bill vs. Temperature
- **Input/Output and Variables:**
  - Input: Temperature $ t $ in °F.
  - Output: Electric bill $ b $ in dollars.
- **Practical Domain:**
  - From the table, the temperatures range from 55°F to 95°F. So, the practical domain is $ [55, 95] $.
- **Practical Range:**
  - The electric bills range from \$98 to \$185. So, the practical range is $ [98, 185] $.

### Summary
1. **Graph 1 (Detroit Population):**
   - **Domain:** [0, 10]
   - **Range:** [1400, 1700] (thousands)
2. **Graph 2 (Bank Account):**
   - **Domain:** [0, 12]
   - **Range:** [75, 275] (dollars)
3. **Graph 3 (Temperature):**
   - **Domain:** [0, 10]
   - **Range:** [50, 110] (°F)
4. **Table (Electric Bill vs. Temperature):**
   - **Domain:** [55, 95] (°F)
   - **Range:** [98, 185] (dollars)

Would you like more details on any specific graph or table? Feel free to ask questions.

Here are 5 related questions to deepen your understanding:
1. How would the practical domain change for the Detroit population if the data extended beyond 1980?
2. Can you interpret the slope of the graph for the Detroit population? What does it represent?
3. How would you estimate the average rate of change for the bank account graph?
4. How does temperature affect the electric bill according to the data from Phoenix?
5. How would outliers in the table data (Phoenix electric bill) affect the practical range?

**Tip:** Always double-check the scales on the axes when interpreting graphs to ensure your domain and range are accurate!

Analyze the domain and range of various graphs and table data, including Detroit population over time, bank account balances, temperature changes, and electric bills in Phoenix. Understand the input and output variables and practical limits of these data sets.

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