Answer: The average temperature on Earth has risen.
Step-by-step explanation:
If you look at the graph, you can see that the average for temperature on Earth has risen since 1800s through 2000s
If the polygons are similar then the sides are in proportion.

Therefore we have the equations:


Answer:
5.5
Step-by-step explanation:
57-29.5 / 10-5 = 5.5