Each step higher in math studies is crucial to doing well at the next level. Pre-Calc is the gateway to higher level mathematics of which the best degrees and careers are built upon. The core essentials in 6 laminated pages can be used along with your text and lectures, as a review before testing, or as a memory companion that keeps key answers always at your fingertips. The most answers for your money in what students have said is "a must have" study tool. Suggested uses: Quick Reference -- instead of digging into the textbook to find a core answer you need while studying, use the guide to reinforce quickly and repeatedly; Memory -- refreshing your memory repeatedly is a foundation of studying, have the core answers handy so you can focus on understanding the concepts; Test Prep -- no student should be cramming, but if you are, there is no better tool for that final review.