This calculator works miracles. If you can afford this calculator, I highly suggest you purchase it for taking the tests because it cuts down the amount of time you use and is allowed for all math tests offered by College Board. For the SAT math portion, this calculator has two important functions. First, you can set the calculator to exact values which will give each answer as a fraction. Why does this help? On the SAT math test, the answers are normally given in fractions rather than decimals. Most regular calculators only have a decimal answer, but if you could also find a calculator that gives exact values, use it! The second reason I highly recommend the TI-89 is because it can solve functions with one variable quickly. On the calculator, there is a “Solve” function. Simply click Solve and put in the formula followed by which variable you want the answer to be in terms of. Here is what it should look like, “Solve (3x+2x^2=20, x). Make sure to place the “,” followed by the variable your using. In both the SAT I Math and SAT II Math II section, this function is both a time saver and helps to improve the speed and accuracy at which you take the test. The calculator also helps you with Calculus AB and BC, so the investment is well worth it.
Note: Other calculators can also be programmed to have a solve function. In Barron’s Math II book, they teach you how to program your graphing calculator in this manner.
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