Will mark you as the
3. manuel is riding his bike. the graph represents the distance manuel travels from his house over time.
here is the
describe what is happening as depicted in the graph.

The first leg of the graph represents Manuel riding his bike for 3 units of time going 5 units distance gradually increasing his speed.  The second line segment represents Manuel staying where he his for 4 1/2 units of time.  The third represents Manuel going a fast speed back to where he started.  I think.

Or the first is him going that distance picking up speed, the second him going a constant speed, and the third him slowing down/speeding up.

The answer would be 13.5 minutes.