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:
7
Step-by-step explanation:
you would chose 7 because it has more and less value
Answer:
5n - 4
Step-by-step explanation:
<u>Step 1: Convert words into an expression</u>
Four less than 5 times a number
5n - 4
Answer: 5n - 4