horrified by iPrep

I know it’s a piece of cake for some people, but for me, it looks like something out of a horror movie. I remember never paying attention in math class back in high school, so I really don't have any aptitude for it. I was motivated to join the IBEW until I saw the iPrep practice test, and I honestly think I won't even bother trying; I literally don't understand a thing on there. Am I the only one?