Find the indicated term

1.) a1 = 5, r=3, a10=
2.) a1= 16, r= 0.02, a11=
3.) a1= 3-4, r=3, a12=
4.) a1= 8, r= 2, a14=

1
in #3, it's 34 or 3-4?
Show your solution please.
that's already my solution. hey by the way, in #3 the final answer is -177147
Thank you. :)
your welcome :)

Answers

2016-06-28T17:16:58+08:00
An = a₁rⁿ⁻¹
1.a₁₀ = 5(3)¹⁰⁻¹
   a₁₀ = 5(3)⁹
   a₁₀ = 5(19683)
   a₁₀ = 59049

2.a
₁₁ = 16(0.02)¹¹⁻¹
   a₁₁ = 16(0.02)¹⁰
   a₁₁ = 16(1.024)
   a₁₁ = 1.638

3.a₁₂ = -1(3)¹²⁻¹
   a₁₂ = -1(3)¹¹
   a₁₂ = -1(177147)
   a₁₂ = -1177147

4. a₁₄ = 8(2)¹⁴⁻¹
   a₁₄ = 8(2)¹³
   a₁₄ = 8(8192)
   a₁₄ = 65536

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