In chapters that follow, detailed topic reviews cover polynomial, trigonometric, exponential, logarithmic, and rational functions; coordinate and three-dimensional geometry; numbers and operations; data analysis, statistics, and probability; and graphing calculators, their operations and applications. Six full-length model tests with answers, explanations, and self-evaluation charts conclude this manual.

    His blog has garnered a devoted following of millions of readers who have come to rely on him to help them run their businesses. A lifelong rap fan, Horowitz amplifies business lessons with lyrics from his favorite songs and tells it straight about everything from firing friends to poaching competitors, from cultivating and sustaining a CEO mentality to knowing the right time to cash in.His advice is grounded in anecdotes from his own hard-earned rise—from cofounding the early cloud service provider Loudcloud to building the phenomenally successful Andreessen Horowitz venture capital firm, both with fellow tech superstar Marc Andreessen (inventor of Mosaic, the Internet's first popular Web browser). This is no polished victory lap; he analyzes issues with no easy answers through his trials, includingdemoting (or firing) a loyal friend;whether you should incorporate titles and promotions, and how to handle them;if it's OK to hire people from your friend's company;how to manage your own psychology, while the whole company is relying on you;what to do when smart people are bad employees;why Andreessen Horowitz prefers founder CEOs, and how to become one;whether you should sell your company, and how to do it.Filled with Horowitz's trademark humor and straight talk, and drawing from his personal and often humbling experiences, The Hard Thing About Hard Things is invaluable for veteran entrepreneurs as well as those aspiring to their own new ventures.

    But many of those failures are preventable. The Lean Startup is a new approach being adopted across the globe, changing the way companies are built and new products are launched. Eric Ries defines a startup as an organization dedicated to creating something new under conditions of extreme uncertainty. This is just as true for one person in a garage or a group of seasoned professionals in a Fortune 500 boardroom. What they have in common is a mission to penetrate that fog of uncertainty to discover a successful path to a sustainable business.The Lean Startup approach fosters companies that are both more capital efficient and that leverage human creativity more effectively. Inspired by lessons from lean manufacturing, it relies on "validated learning," rapid scientific experimentation, as well as a number of counter-intuitive practices that shorten product development cycles, measure actual progress without resorting to vanity metrics, and learn what customers really want. It enables a company to shift directions with agility, altering plans inch by inch, minute by minute.Rather than wasting time creating elaborate business plans, The Lean Startup offers entrepreneurs - in companies of all sizes - a way to test their vision continuously, to adapt and adjust before it's too late. Ries provides a scientific approach to creating and managing successful startups in a age when companies need to innovate more than ever.