Algebra-1

Question Analysis
This question applies the concept of a step function to a real-world scenario, specifically a parking garage pricing model.

Key Concept Explanation
The cost of parking is a step function where the price remains constant within each time interval and jumps to the next price level at certain points.

Step-by-step Solution
1. Identify the time intervals and their corresponding costs:
First hour: $5
Next two hours (total 3 hours): $10
Any additional hours: $15
2. Determine the total time parked: 4.5 hours.
3. Break down the time into intervals:
First hour: 1 hour at $5
Ne...