# Liz's math test included a survey question asking how many hours students spent studying for the test. The scatter plot below shows the relationship between how many hours students spent studying and their score on the test. A line was fit to the data to model the relationship.

# Which of these linear equations best describes the given model?

# (Choice A)

# y=10x+20

# (Choice B)

# y=20x+20

# (Choice C)

# y=-20x+20

# Based on this equation, estimate the score for a student that spent 3.8 hours studying.

The line of best fit passes through (0, 20) and (1, 40)

Therefore, the equation of the line is given by (y - 20) = (40 - 20)/(1 - 0) x (x - 0)

y - 20 = 20x => y = 20x + 20.

So, the correct answer is: B)

Plug in x = 3.8 into the equation, we get y = 96.

So, the estimated score for a student studying 3.8 hours is 96.

I found an answer from en.wikipedia.org

College admissions in the United States - Wikipedia

College admissions in the United States refers to the process **of** applying for
entrance to institutions **of** higher education for undergraduate **study** at one **of** ...
Colleges **spent** an average **of** $585 to recruit each applicant during the 2010 year
. ... International **students may** need to take **tests showing** English-language
proficiency ...

For more information, see College admissions in the United States - Wikipedia

I found an answer from www.quora.com

Do you believe in astrology and astrologers? Do people talk about it ...

**There** are so **many** great answers **below** from **many of** the astrologers here at
Quora I ... own experience with astrology which I started **studying** when I was 15
years old. ... Instead, **ask** him what **your chart indicates** are some **of your**
conscious and ... Looked up material from the net, **studied**, got hooked. **spent**
**hours studying**, ...

For more information, see Do you believe in astrology and astrologers? Do people talk about it ...

I found an answer from projects.ncsu.edu

Graphing With Excel - **Linear Regression**

A straight **line** depicts a linear trend in the data (i.e., the **equation** describing the
**line** ... with a **regression line**, you can also **calculate** the **equation** of the
**regression line**. ... This fact can be used to **calculate** the concentration of
**unknown** solutions, ... Trendlines dialogue box, and check the Display r-squared
**value** on **chart** box.

For more information, see Graphing With Excel - **Linear Regression**