The area ratio is 1:16 meaning that the old area is 1 while the new area is 16. So this is another way of saying "the area is multiplied by 16"
Take the square root of each part of the ratio of 1:16 and we get 1:4
So this is the scale factor. It tells us how the linear components of the circles relate to one another. If the circumference of the smaller circle is 1,then the larger circle has a circumference of 4.
Therefore, the circumference has been multiplied by 4
For number 6 I know the answer is 34 beacuse you add 6, 13, and 15 together to get 34.
Answer:

Step-by-step explanation:
<u>Functions</u>
In a function, an independent variable, let's call it x is related to a dependent variable y and it can be expressed as:
y = f(x)
Let's consider the functions given in the question, where the equation that represents a company's yearly sales is:

And the equation that represents the same company's yearly expenses is:

The company's profit function P(x) can be found as the difference between S(x) and E(x), thus:

Operating:

Simplifying, the profit function for this company is:

If the x between 5 and 2 is a letter then the answer is -21
If it’s a multiplication sign then it’s 19
The denominator is in the bottom of a fraction bar while the numerator is on the top.