Nelson Mandela was arrested in Howick. Rumours were spread the Mandela’s connection with the communist made him a target of US officials.US officials continued to track the activities of Nelson Mandela, and they found a collaborator in the South African government.
Answer:
Mrs. Grayson, the much loved teacher of first grade, retired last year.
Explanation:
The subject of this sentence is Mrs. Grayson, and the sentence says she retired last year at age seventy two. "The much loved teacher" describes Mrs. Grayson, and should have a comma after (and before it).
Answer: 
Explanation:
so basically f(g(x)) is telling you to plug the entire g(x) equation into x in the f(x) equation so it will look like this
2(
) + 1
and then simplify
B. All oncoming traffic is stopped by red lights
