Whoever answers this correctly gets brainliest

3: D) 11

4: D) 12

7: C) 63

8: A) Adjacent Angles

Step-by-step explanation:

Let's pretend the sides of a triangle are A B and C.

The third side of a triangle is always greater tham A-B and lesser than A+B. This is called the triangle inequality theorem.

For 7 and 8, we have three lines that come together at one point (adjacent angles), and the vertical angle postulate where two mirrored angles will always have the same angle.

12 servings. 4 times 3= 12