Question

how long was salma in the store?

Explanation:

Step1: Identify the time interval when distance is constant

When Salma is in the store, her distance from home remains constant. On the graph, this is the horizontal line segment.

Step2: Calculate the time difference

The horizontal line segment (constant - distance part) starts at \(x = 15\) (minutes) and ends at \(x = 19\) (minutes). The time she was in the store is \(19 - 15\).

Answer:

\(4\) minutes