1). The line that models the data points and the reason is:
b). blue, because the data points are all close to the line.
2). 8 weeks
3). 17 weeks
Line Models
The graphs help in understanding the provided data more clearly and effectively.
The blue line would most effectively show the data points and the reason behind this is that they all lie close to the line.
The estimated score post 3 weeks of practice would be around 8 weeks.
As per the line shown, 17 weeks would be required to attain a score of 50.
Thus, the above answers are correct.
Learn more about "The Blueline model" here:
brainly.com/question/13872204