World's population that lives in China in percentage is 20%
Line of best fit also known as a linear regression or a trend line, the line of best fit is common tool for showing how two variables are related.This can be established by:
Positive correlation
all scatter plots
negative correlation
Line of best fit is used in order to demonstrate any observed trends in order to predict future outcomes regarding the data point variable in use.
Answer:
4/1
Step-by-step explanation:
i believe thats right since 4/1 is a fraction and it can be simplified to 4
Solution: We are given that:
5 people can paint 7 walls in 21 minutes
Therefore, 1 person can paint 7 walls in 
minutes
Which means 1 person can paint 1 wall in 
minutes
Now, 3 people can paint 1 wall in 
minutes
Therefore, 3 people can paint 5 walls in 
minutes
