Lemma
EasyCounting & chance
OpenStax, Algebra and Trigonometry 2e §13.2 Arithmetic Sequences · Try It 1 · Probability · Counting & chance

Arithmetic Sequences · Try It 1

Is the given sequence arithmetic? If so, find the common difference.

~5 minWritten answer · check your work with Lemma

OpenStax, Algebra and Trigonometry 2e · §13.2 Arithmetic Sequences · Try It 1

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your working

Check your full solution

Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.

Your first check today doesn't need an account.

Your photos and PDFs are read once and not stored — only the transcription is kept.