Answer:
A. 8/7
Step-by-step explanation:
<h3>Step 1 </h3>
4/7 - (-4/7) --> 4/7 + 4/7
The two minutes turn into a plus, removing the bracket.
<h3>Step 2</h3>
4/7 + 4/7 = 8/7
Add the two fractions together.
For this case we must find the inverse of the following function:

Then, we follow the steps:
We change
by y:

We exchange the variables:

We clear the variable "y":

We change y for 

Answer:

Answer:
Between 23.77% and 56.23%
Step-by-step explanation:
On your TI-84
Press STAT
Use right arrow to scroll over to highlight TESTS
Use down arrow to scroll down to A:1-PropZInt...
Press ENTER
Make the screen read
x:14
n:35
C-Level:0.95
Calculate
highlight Calculate
Press ENTER
See this:
(.2377,.5623)
p(hat)=.4
n=35
The confidence interval is 0.2377 < p < 0.5623
Between 23.77% and 56.23%