Rest easy with a calculator that's College Board-approved for use on the PSAT/NMSQT, SAT, SAT Subject Tests in Mathematics, and select AP® Exams; and International Baccalaureate-approved for use on IB Diploma Programme examinations. Enjoy a feature-rich calculating experience with familiar HP keypad and a large 3.5-inch diagonal, multi-touch display. We don't stop at hardware. You also get an integrated tool suite. HP Equation Writer supports multiple linear and non-linear equation solving. HP Solve is a time-saving application that allows you to store equations and solve for variables. Easily switch between symbolic, graphical, and numerical table views with dedicated buttons. Explore math concepts with Dynamic Geometry, CAS, Advanced Graphing, and spreadsheet applications. Save time and keystrokes with RPN and programmable functions, and see intermediate results while you work. Add an image as a background and sketch and manipulate a function with your finger to create a blended learning environment. Turn the calculator into a testing tool with test-mode configuration that makes only pre-approved examinations.