See the file attached and let me know whether you understand the explanation.
Given:
The graph passes through the points (0,-20) and (4,10).
To find:
The equation of line that most closely represents the line depicted in the graph.
Solution:
If a line passing through two points, then the equation of line is

The given line passes through the points (0,-20) and (4,10). So, the equation of line is




Subtracting 20 from both sides, we get

The function form is

f of x equals fifteen halves times x minus 20.
Therefore, the correct option is B.
Answer:

Step-by-step explanation:
we know that
The perimeter of a rectangle is equal to
----> equation A
where
L is the length
W is the width
we have
The length is 3 inches more than twice the width
so
----> equation B
substitute equation B in equation A

Combine like terms

Answer:
Explained below
Step-by-step explanation:
We know (hopefully) that 100 centimeters is equal to 1 meter.
The expression should essentially be 400/50.
400/50 = 8
Victor would need 8 books to make a tower with the height of 4 meters.
By the way 50 centimeters per book is a pretty hefty book, would be as thick as my hand pointing upwards.