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6-54.
  1. Write the first 5 terms for each of the sequences. Homework Help ✎

    1. an = 2n – 5

    2. a1 = 3
      an+1 = –2 · an

a1 = 2(1) − 5
a2 = 2(2) − 5

Note that a1 is given.

a2 : a1+1 = −2 · a1
a2 = −2(3)

a3 : a2+1 = −2 · a2
a3 = −2(−6)