Answer:
The ans is correct. But I think C is also correct.
Step-by-step explanation:
Answer:
- Point of Inflection: Does not Exist
- f(x) is concave up when x∈(-∞,-6)
- f(x) is concave down when x∈(-6, ∞)
Step-by-Step Explanation
We are to determine the intervals on which the function is concave up or down and find the points of inflection.
A function f(x) is concave up in the intervals for which the second derivative of the function .
A function f(x) is concave down in the intervals for which the second derivative of the function .
Given
We need to solve for the second derivative of the function.
The first derivative:
Using Quotient Rule:
.
.
The Second derivative:
Similarly applying quotient rule:
Now is 490, thus does not have a solution,
However, we determine the point where is undefined. This point is x=-6.
In the Interval, (-∞,-6), f(x) is concave Up and in the Interval (-6, ∞), f(x) is concave down. It has no Inflection point.
Answer:
the second one
Step-by-step explanation:
because -3(5x + 13) you distribute and get
-15x -39
Answer:
The class in the second and longest bar graph (the one labeled 3) has the most students.
Step-by-step explanation:
When looking for the largest amount of something in bar graphs, the largest bar graph is correct. In this case the second bar graph is the longest, and we can see it indicates the class contains 28 students.