Answer:
-6
Step-by-step explanation:
The formula for finding the rate of change is:

The interval is [1,5]
So, a = 1 and b=5

Putting in the values

The average rate of change is -6 ..
Answer:

Step-by-step explanation:
The question says, "twelve times the difference of a number and four"
Let's start with the first number, which is twelve = 12. Moving on, we have times = ×, then the difference which is minus(-). A number is unknown, any aphabet can be used to represent the number, so, we represent with 'x', and then four = 4.
Arranging them, we have:

in algebraic equations, times is always represented by bracket. Therefore, our final answer is:

I hope this helps.
We can check by using the
pythagorean theorem or a² + b² = c².
Substitute your values in for <em>a</em>, <em>b</em>, and <em>c</em>.
(9)² + (13)² = (16)²
~simplify
81 + 169 ≠ 256
81 + 169 is 250 but 16² is 256.
So, this in not a right triangle.
D, because 18/6 = 3 and 12/4 = 3
gives an average cost per unit, if we want to produce x of them.
So for example, we want to produce 500 toy cars for our store, and we need a price per unit (per 1 toy car). What we do is we calculate C(500).
So to calculate the cost of one unit when producing 1250, we calculate C(1250)

$ is the cost of 1 toy car.
Answer