My professor gave us a practice test to prepare ourselves for our first test, but did not provide the solutions for this practice test. Here is a shortened copy of the practice test and my solutions for some of them.
Practice Test: http://img172.imageshack.us/img172/6340/mathfz4.jpg
My solutions: http://img172.imageshack.us/img172/7088/math2pr1.jpg
My math for number 4 was cut out and the answer to number 4 is below number 7.
I believe my solutions for the numbers answered are correct. However, I'm completely lost on how to do numbers 5 and 8. Any help on those would be much appreciated. Thanks in advance.
we can't see either image well. try a different method of posting the pics
Edited to include direct links to the images.
Answer to number 4 = 2-sqrt(x+2)