Identify the non linear graph

C.

Step-by-step explanation:

Each of the graphs is clearly a straight line, apart from graph C. Graph C is a parabola.

23,801 km

Step-by-step explanation:

Here, the given problem,

The distance travelled from home to Qatar = 11,469 km,

The distance travelled from Qatar to Brisbane = 12,332 km,

So, total distance travelled from home to Brisbane = 11469 + 12332

=  23,801 km

Now, making the bar diagram,

Take a grid that shows 11469 and join this with the grid that shows 12332,

We obtain a grid that shows 23801.