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Home > CC4 > Chapter 8 > Lesson 8.2.3 > Problem 8-124

8-124.
  1. For each sequence defined recursively, write the first five terms and then define it explicitly. Homework Help ✎

  2. a.

    t(1) = 12
    t(n + 1) = t(n) − 5

    b.

    a1 = 32
    an+1 = an

Read the Math Note box in section 5.3.3 on sequences.

Note t(1) is given.

t(1 + 1) = t(1) − 5
or t(2) = 12 − 5

t(2 + 1) = t(2) − 5
or t(3) = 7 − 5

Note first term a1 is 32.

To find a2, substitute 32 into the equation.