Use the histogram. (Lesson $12-4$ )
How many of the animals in the histogram have a life span of more than 20 years?
if we want to know the animals that are more than 20 we want to talk about all the different bars that are more than 20. And if we look at that, we have one. In the 21 to 30 we have one in the 31 to 40 and one in the 91 200 so we have three animals with a life span of more than 20.