The average high temperature each month in a calendar year for a city in South Carolina is represented by the function: f(x)=−x2+13.3x+42
f
(
x
)
=
-
x
2
+
13
.
3
x
+
42
where x is the month. Find the average rate of change from September to December

Step-by-step explanation:

The average rate of change measures the average rate at which a function changes per unit time in a given interval. In another words, the average rate of change is the relationship between vertical and horizontal changes between two points of the function. So, basically if you are trying to find the average rate of change, you are trying to find the slope.

If represents the months, then:

Let:

So:

For:

Therefore:

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

answer: '

the distance between points l and m

step-by-step explanation: