College Math

[dc67]

I am taking College Math next Monday. Last week before I started to study I took a Peterson's practice test and got a 45. I thought, not passing but something to build on. I took the 2nd practice this morning and went down to a 38. It seemed like 75pct of the questions were functions and then 10 pct truth tables with just a little of everything else. I was feeling good but now I am in a panic. Is the real CLEP going to be that many function problems? Any advice on functions? I have been on youtube for the last hour trying to find videos. I get the whole thing about plug in the number. I am lost when it comes to graphing an equation though and when you have x and y my brain seems to freeze. any advice would sure be appreciated.

Thanks,

Doug