chrissteward5188 chrissteward5188
  • 15-01-2024
  • Mathematics
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Find the sum of the first 3 terms of a geometric sequence if a = 5 and r = 3. Use the formula Sₙ = a(1-r ⁿ)/1-r.

A) 120
B) 80
C) 40
D) 20

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