Parentheses are used to ______________________

Which of the following can help you handle requests for recommendations in a social networking environment?

A) responding to a request from someone you don't know B) writing a recommendation for anyone C) writing as much or as little as you're comfortable with sharing about the person D) writing only positive information on everyone E) asking the person to write the letter, and offer your approval

Costs that do not vary with production levels or sales revenue are known as ________ costs

A) overhead B) variable C) average D) opportunity E) total