Answer:
(c) the sample is amount of sleep the volunteers got in the study.
Step-by-step explanation:
sample: this is a small part that is intending to show what a big part is all about.
volunteer: a person who does something willingly.
Answer:
I have solved on my own.
contains the answer to your question.
The correct answer is 3) $15
It seems that the first row was before the fixed amount was charged.
Days 1 and 2 are in a constant change of 1x and 15y.
The degree is the highest power so
I) 2
Ii) 4