1. 3rd one, because for each x there's only one y.
2. The domain are x's, so it's <span> {2, 4, 6, 8}
3. </span>The range are y's, so it's <span> {1, 2, 3, 4}
4.

5.</span>

6. <span>

7.

</span>
Answer:
1: 3
Step-by-step explanation:
3:9
divide both sides by 3
1: 3
Yes, all 6 digit numbers have 6 addends in their expansion
15 because simple division 30 divided by 2 is 15 only 15 can happen
C= πr²
C= 3.14×8²
C=3.14×64
C=200.96