Answer:
C. Must be 1
Step-by-step explanation:
The correlation coefficient of an equation represents the relation between the two variable ( dependent and independent )
It lies between -1 to 1,
If an equation has strongly positive correlation then the value of correlation coefficient is 1,
If there is no relation then the value of correlation is 0,
If there is strongly negative relation then the value of correlation coefficient is -1,
Here, the equation is,
y = 2 + 3x
Since, the value of y is increasing with increasing the value of x,
We can say that there is strong positive relation between the variables x and y,
Hence, by the above statements,
The correlation coefficient between y and x in this data set must be 1.
Option 'C' is correct.
First we find the measurement of dark dot .
ANd for that we have to use the formula of the angle formed by the intersection of chord .
Let the dark dot be t.
So we have

t and z are linear pair and sum of angles of linear pair =180 degree.
So we get

Step-by-step explanation:
the image u have shared is too much covered by focus light send it again
If the rate of change (ROC) of the function is quadratic, then the function type is cubic
<h3>What is rate of change?</h3>
The rate of change of a function is the rate at which the output values change over the input value
The rate of change of a function is one degree less than the actual function
This means that, a cubic function will have a quadratic rate of change
Hence, the correct option is (d)
Read more about rate of change at:
brainly.com/question/8728504
The answer is 489,300.
Work:
We go to the tenth's place, which is 9. Since 9 is higher than 5, we need to round the hundredth's place to 3.