1. The problem states that Maria drives at 50 mph. 2. This is a straightforward statement of speed, so no formula is needed unless we want to calculate distance or time. 3. If you want to find distance traveled in a certain time, use the formula: $$\text{Distance} = \text{Speed} \times \text{Time}$$ 4. If you want to find time taken for a certain distance, use: $$\text{Time} = \frac{\text{Distance}}{\text{Speed}}$$ 5. Since the problem only states the speed, the final answer is: Maria drives at 50 mph.