It cost Brody $9.80 to send 196 text messages. How many text messages did he send if he spent $4.20?
1 answer:
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Answer:
Step-by-step explanation:
Answer:
a₁₂ = 16384
Step-by-step explanation:
The nth term of a geometric sequence is
= a₁
where a₁ is the first term and r the common ratio
Here a₁ = 8 and r = a₂ ÷ a₁ = 16 ÷ 8 = 2 , then
a₁₂ = 8 × = 8 × 2048 = 16384