kendonbennett24
kendonbennett24 kendonbennett24
  • 07-10-2021
  • Mathematics
contestada

Evaluate a1 (r)^n-1 for a1 = 2, r= 3, and n = 4.
A. 216
B. 18
C. 32
D. 54

Evaluate a1 rn1 for a1 2 r 3 and n 4 A 216 B 18 C 32 D 54 class=

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Hi1315
Hi1315 Hi1315
  • 07-10-2021

Answer:

[tex]54[/tex]

Step-by-step explanation:

[tex] a_1 {r}^{n - 1} \\ 2 \times {3}^{4 - 1} \\ 2 \times {3}^{3} \\ 2 \times 3 \times 3 \times 3 \\ 2 \times 9 \times 3 \\ 18 \times 3 \\ = 54[/tex]

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