Let's call the number of rows 'R' . (Clever ?)
There are (3x -2) trees in each row, and there are 'R' rows,
so the total number of trees is [ R times (3x-2) ].
But the problem told you that the total number of trees is (24x-16).
So
R(3x - 2) = (24x - 16)
For a quick, happy ending, how about factoring '8' out of the right side:
R(3x - 2) = 8(3x - 2)
Is it jumping out at you yet ?
If not, then divide each side by (3x - 2) :
<em> <u> R = 8</u></em>
There are eight (8) rows of trees.
The number of dots tells us how many times we need to add the actual number underneath the dots. So you need to use both.
<h3>
Which number should you use for the mean?</h3>
Let's suppose we have the next set:
{2, 2, 2, 4, 5, 5, 6}
If you graphed it in a dot plot, then you will have:
- 3 dots above the number 2.
- 1 dot above the number 4.
- 2 dots above the number 5.
- 1 dot above the number 6.
A total of 7 dots.
To find the mean, we just compute:

So the number of dots tells us how many times we need to add the actual number underneath the dots. In conclusion, to find the mean you need to use both, the number of dots and the number underneath.
If you want to learn more about dot plots:
brainly.com/question/15853311
#SPJ1
Answer:
3
Step-by-step explanation:
Set it up as
8n = 24
n = 24/8
n = 3
Answer: Pippin, Jack Rabbit, Racer, Thunderbolt
Step-by-step explanation: You can get the slope of each rollercoaster from the given information and rank using the slope.