My girlfriend is taking college algebra and asked me about these questions (see attachments). I am totally drawing a blank, the book has no examples, she has no notes and the teacher hasn't gotten back to us. I know it's gotta be easy, but it's eluding me.
If you have any time at all and want to help a struggling college student, we would really appreciate it. =)
Those answers were from the study guide. We didn't know the process of *getting* the answer for new questions that will be on the test. From your example I figured out the process. Thanks!