I don’t know to be honest
Answer:

Step-by-step explanation:
Since line m is parallel to line n, therefore:
(consecutive interior angles are supplementary)
Solve for x
Add like terms

Add 7 to both sides


Divide both sides by 11


Answer:
Circumference is 12.56
Area is 6.28
Step-by-step explanation:
4×3.14=12.56
2×3.14=6.28
(x^2 +3)(5x+9)
5x^3 + 9x^2 + 15x + 27