Back to 13.2 Arithmetic Sequences

13.2 Exercise 6

Avg difficulty 2.5

Find the general term (nth term) of an arithmetic sequence.

  1. ⓐ Find the twenty-first term of a sequence where the first term is three and the common difference is eight.
  2. ⓑ Find the eleventh term of a sequence where the third term is 19 and the common difference is five. Give the formula for the general term.

OpenStax Algebra and Trigonometry 2e, 13.2 Arithmetic Sequences, exercise 6

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.