Complete the stem-and-leaf plot of the data. A table, titled Books Read. The data in the table are as follows. First row. 26, 15, 20, 9. Second row. 31, 25, 29, 32. Third row. 17, 26, 19, 40. Books Read
Stem Leaf
0
1 5
9
2 0 5 6 6 9
3
2
4 0
Key: 1 | 5 =
books

Books Read
Stem Leaf
0
1 5
9
2 0 5 6 6 9
3
2
4 0
Key: 1 | 5 =
books

1. they vary with a higher number because boiling is way hotter than melting

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.