SAT has always provided a math formula chart at the beginning of every math section. However, there are quite a few new formulas that students need to memorize in order to master the math sections. A= P (1 + r) ^ t The amount of money accumulated over t years can be calculated by raising (1 + r) to the t power where r represents the interest rate. Once this amount has been calculated then it is multiplied by P the amount of money initially invested. Of course, this type of problem will be on the calculator portion of the math test. If they ask for the continuously compounded interest, the formula used will be Pe^rt. Half Life Decay Equation is f(t) = a .5 ^ t/h a = initial amount t = time (total) h = time it takes for half the sample to decay t & h must be expressed in the same units Quadratic formula is now required: -b + and - sqrt b^2 - 4ac all divided by 2a Sum of solutions for a quadratic equation is -b/a . |