Let's solve the problems one by one:

12. The value of $\sqrt{19}$ falls between which two whole numbers?

• $\sqrt{16} = 4$ and $\sqrt{25} = 5$.
• So, $\sqrt{19}$ is between 4 and 5.
• Answer: D. 4 and 5

13. The value of $\sqrt{30}$ falls between which two whole numbers?

• $\sqrt{25} = 5$ and $\sqrt{36} = 6$.
• So, $\sqrt{30}$ is between 5 and 6.
• Answer: A. 5 and 6

14. Using the number line, determine which point most accurately portrays the value of $\sqrt{8}$.

• $\sqrt{4} = 2$ and $\sqrt{9} = 3$.
• $\sqrt{8}$ is slightly less than 3, around 2.8, which appears closest to Point N.

15. Which statement is true about the values of $\sqrt{10}$ and $\sqrt{15}$?

• $\sqrt{10} \approx 3.16$ and $\sqrt{15} \approx 3.87$.
• Both $\sqrt{10}$ and $\sqrt{15}$ fall between 3 and 4.
• Answer: A. The value of $\sqrt{10}$ and the value of $\sqrt{15}$ both fall between 3 and 4.