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Choose the correct explicit formula for the sequence below.

3, 6, 9, 12, 15


A. an=3 + 2(n - 1)
B. an=2 + 3(n - 1)
C. an=3 + 3(n - 1)
D. an=3 + 3(n)

Respuesta :

wegnerkolmp2741o

Answer:

an = 3+3(n-1)

Step-by-step explanation:

We are adding 3 each time

6-3 = 3  9-6 = 3

The common difference is 3

The explicit formula for an arithmetic sequence is

an = a1+d(n-1)

The first term is a1 = 3

d =3

an = 3+3(n-1)

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