Please help me to do all of these

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?

Read the excerpt from gilgamesh: a new english version.gilgamesh backed away. he said,"how dreadful humbaba's face has become! it is changing into a thousand nightmarefaces, more horrible than i can bear.i feel haunted. i am too afraid to go on." §enkidu answered, "why, dear friend,do you speak like a coward? what you just saidis unworthy of you. it grieves my heartwe must not hesitate or retreat."

Factor these polynomials and explain how 1. 12x - 3x^2 2. 20 - 240x^2