Answer:

Step-by-step explanation:
Because we are told equivalent expressions for y and z we can plug those in to 2(y+z).

Then simplify by combining like terms of the expressions. Values ending in x^2 can be combined with each other.

Now we can distribute the 2 by multiplying each value in the parentheses by 2.

Answer:
6y+3
Step-by-step explanation:
correct me if i am wrong!
The answer is your 3rd option:
y = -40x + 200
Answer: 25.13 m
Step-by-step explanation: pi x 2^2x 6= 25.13
3
This is an approximate number but it should be correct
:)
A & B are composite while C is prime