Answer:
f(g(x)) = 2x + 5(x - 5 ÷ 2)
Step-by-step explanation:
Answer:the new line will be 1/4 of the original line.
Step-by-step explanation:
I don't know about the first one but for the second one:

Mushroom only: 4/12 and 1/3
Pepperoni only:6/12 and 2/4
Both mushroom and pepperoni: 2/12 and 1/6