Answered

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What is the explicit formula for the sequence {3, 8, 13, 18,...}?
1.an = 3 + 02-1
2.an = 3 +5,1
3.an = 3 - 5(n - 1)
4.an = 3 + 5(n - 1)

Sagot :

Answer:

An = 3 + 5(n-1)

Step-by-step explanation:

You can use guess and check until you see the right sequence.

A1 = 3 + 5 (1 - 1) = 3 + 5(0) = 3

A2= 3 + 5 (2-1) = 3 +5(1) = 8

A3 = 3 + 5(3-1) = 3 +5(2) = 13

...

An = 3 +5 ( n - 1 )

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