Answer:
The 20 subjects constitutes the sample
Step-by-step explanation:
Given


Required
What does 20 represent?
The 150 patients being treated is the population of the study. When a certain amount is selected from a population, the selected is referred to as a sample.
So, this means that, 20 represents sample of the study.
5 hours of free time a day = 35 hours of free time a week
11 + 11 = 22 hours on the internet or playing video games

x 100 = 62.8% = 63%
The vertical line that goes through the vortex
Answer:
Yes
Step-by-step explanation:
3(2y + 7) + y
6y + 21 + y
7y + 21