Scientific Calculator with 2-line LCD is perfect for students studying general math & science, pre-algebra, algebra, geometry, trigonometry, statistics, biology & chemistry. Calculator performs 273 scientific, math & statistic functions. Two-line LCD displays an exponent symbol & 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 & last-answer memory. Calculator allows equation editing & playback, one & two-variable statistics, normal / stat modes, six regression types & N-base calculations. Other functions include logarithms, reciprocals, powers, roots, factorials, trigs & hyperbolic trigs. 3D, light-reflecting calculator is approved for use on SAT & PSAT / NMSQT exams. Hybrid power operates with solar & battery operations. Hard case adds extra protection to the keys & screen.