Scientific Calculator with 2-line LCD is perfect for students studying general math and science, pre-algebra, algebra, geometry, trigonometry, statistics, biology and chemistry. Calculator performs 273 scientific, math and statistic functions. Two-line LCD displays an exponent symbol and Direct Algebraic Logic (D.A.L.), allowing you to enter the elements of an expression in the exact order that they appear when written. Calculator includes eight temporary memories, an independent memory and last-answer memory. Calculator allows equation editing and playback, one and two-variable statistics, normal\/stat modes, six regression types and N-base calculations. Other functions include logarithms, reciprocals, powers, roots, factorials, trigs and hyperbolic trigs. 3D, light-reflecting calculator is approved for use on SAT and PSAT\/NMSQT exams. Hybrid power operates with solar and battery operations. Hard case adds extra protection to the keys and screen.