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The problem provided compares the fuel economies of two cars, A and B, based on the equation:

\[
B = 2A - 5
\]

Where:

- \( A \) represents the fuel economy of car A (in miles per gallon, or mpg),
- \( B \) represents the fuel economy of car B (also in mpg).

### Meaning of the equation:
This equation states that the fuel economy of car B is 5 mpg less than twice the fuel economy of car A. In other words, car B is less efficient than twice the efficiency of car A by 5 miles per gallon.

If you have the fuel economy of car A, you can calculate the fuel economy of car B by doubling A's value and subtracting 5.

Would you like further details on this explanation or have any other questions? Here are some related questions that could deepen your understanding:

1. If car A has a fuel economy of 20 mpg, what is the fuel economy of car B?
2. What happens to car B's fuel economy if car A's fuel economy increases?
3. How would you rearrange the formula to solve for \( A \) in terms of \( B \)?
4. Can you interpret the practical meaning of the number "5" in the equation?
5. How would the equation change if car B's fuel economy were more efficient than car A's?

**Tip**: When solving equations relating two quantities, always consider how changes in one variable affect the other.

Two different types of cars, A and B, are being tested for their fuel economy. Fuel economy is the number of miles a car can travel on one gallon of gas. The units are mpg. For example, a full-sized truck generally can travel 17 miles using one gallon of gas. Write the meaning of the following statement: B = 2A - 5

Explore the linear relationship between the fuel economies of two cars, A and B, using the equation B = 2A - 5. Learn how car B's fuel efficiency is calculated as 5 mpg less than twice car A's efficiency. Suitable for students in Grades 6-8.

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