Answer:
the new value is 81.
Step-by-step explanation:
Hello!
Step-by-step explanation:
Slope: 

<em><u>Therefore, the slope is 2.</u></em>
<em><u>Answer is 2.</u></em>
Hope this helps!
Thank you!
-Charlie
:)
:D
Have a great day!
<h2>
Answer with explanation:</h2>
Given : A poll found that a particular group of people read an average of 15.7 books per year.
i.e. 
The pollsters are 99% confident that the result from this poll is off by fewer than 2.65 books from the actual average x.
i.e. E= 2.65
The confidence interval for population mean is given by :-

Hence, the required inequality involving absolute value for : 
To solve this inequality for x, we have

Hence, the interval in which the average is likely to fall :

Let <em>f(x)</em> = (2 - <em>x</em>)/(2 + <em>x</em>). By definition of the derivative,




