**Answer:Its Either A B C OR D**

**Step-by-step explanation:**

I Think It's A

**Answer:**

Part A -> Function

Part B -> Function

**Step-by-step explanation:**

<u>Concept</u>

A relationship is a function only if **there's a single y value corresponding to an x value**. It **can **have the **same y value for different x values** but it <em>**must not have multiply y values for a single x value**</em>.

Below is an example

<u>Function</u> <u>Not a Function</u>

<u>x</u> <u>y</u> <u>x</u> <u>y</u>

1 5 1 5

2 6 2 7

3 5 1 6

<u>Part A</u>

Looking at the given graph, we see that the relationship has a single **y value corresponding to an x value **and so it is a **function**.

<u>Part B</u>

If there was the same number of bacteria for two consecutive hours it would mean the **same y value for different x values**. So, it would still remain a **function**.

375 mi^2 15

--------------- = ------ = 3/2

250 mi^2 10

**The ratio of the population of Henderson County to that of Perquimans is 3/2.**

What you want to do is do:

0.5 + 0.5 + 0.5 to find how much 3 magazines are.

So, three magazines cost $1.50