A movie streaming service charges $10 up front and $2 for each movie thereafter. Which graph best represents the cost of watching movies over time?(1 point) Responses
1. A straight line sloping upwards, starting at $10 and increasing by $2 for each additional movie watched.
2. A curved line sloping upwards, starting at $10 and increasing gradually as more movies are watched.
3. A staircase pattern with each step up representing $2 for each additional movie watched.
4. A flat line at $10, indicating the initial cost, with individual steps up for each additional movie watched.