SAT Math / Advanced Algebra

Graphing Exponential Models in Desmos

Part of the full libraryOpens January 2, 2027 · $97 for a year
What’s included
radicalA radical contains a root symbol, such as √x or ∛x. A square root squares to x; a cube root cubes to x.

You’ll leave with these skills

  1. Find when an exponential model reaches a target amountGraph the model and a horizontal line at the target amount, then click where they cross to get the time.
  2. Find the first whole year a model passes a targetCheck the whole years on each side of the crossing and pick the first one where the model is past the target.
  3. Find when one exponential model overtakes anotherGraph both models and click where their graphs cross to find when one passes the other.
  4. Count every crossing, including ones outside the graph windowZoom out in both directions before you decide how many times the graphs cross.

This lesson is part of the full library

207 lessons that teach every skill the SAT tests
  • 71Math
  • 40Reading
  • 24Grammar
  • 10 full-length practice tests to build test-day stamina and confidence
  • A Desmos simulator to solve math questions faster
  • A step-by-step guide to every practice test question
  • The Bluebook Simulator, so test day feels familiar
  • A drawing for every key term, so new ideas make sense at a glance

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