Question

Write an if statement that displays the message "The number is valid" if the value referenced by speed is within the range 0 through 200 .

Short answer

**Answer**: To write an if statement in Python that checks if a variable 'speed' is within the range of 0 to 200 (inclusive) and displays the message "The number is valid", follow these steps: 1. Define the 'speed' variable with a value, e.g. `speed = 120`. 2. Write an if statement that checks if the value of the variable 'speed' is within the range of 0 to 200 (inclusive): ```python if 0 <= speed <= 200: print("The number is valid") ``` Now, the if statement will print "The number is valid" if the variable 'speed' is within the specified range.

Step-by-step solution

Define the variable 'speed'

First, define the 'speed' variable with a value, for the demonstration purposes let's assign it a value of 120. It can be replaced with a user input or any other value later on. ```python speed = 120 ```

Write the if statement

Write an if statement that checks if the value of the variable 'speed' is within the range of 0 to 200 (inclusive). If it is, display the message "The number is valid". ```python if 0 <= speed <= 200: print("The number is valid") ```

Test with different values

Test the if statement with different values for the variable 'speed' to see if the program is working correctly. ```python # Test with various values for the 'speed' variable speed = 120 if 0 <= speed <= 200: print("The number is valid") speed = -5 if 0 <= speed <= 200: print("The number is valid") speed = 250 if 0 <= speed <= 200: print("The number is valid") ``` With the above code, the "The number is valid" message should only be displayed when the value of the 'speed' variable falls within the specified range of 0 to 200.