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2 answers:
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Answer: Choice D
9, 30, 93, 282, 849
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Explanation:
The notation tells us that the first term is 9
The notation says that we multiply the (n-1)st term by 3, then add on 3 to get the nth term
So if we wanted the second term for instance, then we'd say
If we want the third term, then,
and so on.
The terms so far are: 9, 30, 93
You should find the fourth and fifth terms are 282 and 849 respectively if you keep this pattern going.
Therefore, the answer is choice D
Answer:
- 473
Step-by-step explanation:
There is a common difference d between consecutive terms, that is
d = 2 - 7 = - 3 - 2 = - 8 - (- 3) = - 13 - (- 8) = - 18 - (- 13) = - 5
This indicates the sequence is arithmetic with n th term
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 7 and d = - 5, thus
= 7 + (96 × - 5) = 7 - 480 = - 473