I'm going to be taking the Math B regents soon and I am taking practice test. I'm currently doing the 2004 August regents and I managed to get the answers online to check my work. However, the key only says the answers and doesn't show any of the work. Can someone please show me what to do for numbers 25,26,27,30,31,33 and 34? Here is the site with all the questions. Thank you.

http://www.nysedregents.org/testing/...mathbaug04.pdf