No worries--it all starts coming back with a little practice. My friends and I are all older students, and we did well. We got in and started our RN nursing program in the Fall. One friend was not happy with her original grade and was able to retake the test. Often, there are several testing sites with different test dates so you may have this option too.
Forgot to mention, when working through the study guide, I had my hubby or the BBsitter tutor me on the problems I had forgotten. I also went through and did the study guide problems twice. By the second go around, it was coming all back. Then, just before the test, I got my hands on an older version of the ATI study guide and did the math problems in there as well (they redid the study guide a couple years ago).
I also went to a test prep class, but found it worthless. In retrospect, I over studied because I like you was not getting younger and was anxious to get a seat come Fall. Just use that study guide as your bible and you will be fine. Focus your anxiety on working through a several questions a day, and revisit them the next day--those questions will come up (mostly in an easier format) on the actual TEAS test.
I was anxious too. I remember the first time I opened up that study guide....that first "reading" section was deceptively easy and got me thinking the TEAS would be a breeze. Then I got to the math and it stopped me cold....it had been so long since I had done math like that! Plus, I don't think I had much geometry in highschool so I had to have my hubby teach me that stuff from scratch.
In the end, I did extremely well--and you will too. The funny thing is math is not my strongest thing, but that was the section where I had my highest scores.....the grammar
section that I did not study at all were my lowest. Of course, everyone does well in the reading. Think I was in the 100's there. Bring some water and snacks with you to the test, and a positive attitude--you will be fine.