A credible peer-review source is from a source that isn't biased, or is not related to you. It is best to find someone who isn't one of your friends. Since they are credible, the source should be verified that they know what they are talking about as well. I hope this makes sense.
X=1.5
To get this answer you must distribute the -0.3 to the x and -4 in the parentheses. Once you distribute you should have .5x= -.3x+1.2. Next you add together both x's to get .8x=1.2. Divide .8 on both sides to get x=1.5.
Q1: A Because Banging modifies noise.
Q2: B, no name it given, and it isn't the narrator, Robert Frost.
Answer:
A large truck or suitcase, typically made of stiff leather and opening into two equal parts.
Answer:
I think its A but I'm not 100% because there is no paragraph present
