Answer:
minimum and value of 4
Step-by-step explanation:

When
we will be able to get the critical points.


The graph is a quadratic graph with a 'U' shape, thus it has a minimum critical point.
864 is the answer to the question that you asked just use a calculator
Answer:
The correct option is:
A. We are 95% confident that the interval from 55.4 seconds to 61.2 seconds actually does contain the true value of μ.
Explanation:
In statistics, confidence interval is the interval estimate about the population parameter of interest at certain level of confidence like 95%. A 95% confidence interval gives us a range of values that we can be 95% confident contains the true mean of the population.
Therefore, the option A is correct
<h2>
Answer:</h2>
.
<h2>
Step-by-step explanation:</h2>
<h3>1. Write the expression.</h3>

<h3>2. Solve the equation for n.</h3>

----> Multiply both sides by 10.
----> Simplify.
----> Solve the fraction product.
----> Simplify.
----> Simplify by dividing the numerator and denominator by the same number.
----> Simplify.
----> Reorganize.
.
<h3>3. Express your result.</h3>
.
<em>Note. </em><em>Check the attched image to see the manual solution of the equation. We took the same steps I explained previously in the manual solution.</em>