Algebra-1

To find the explicit formula for the sequence 4,8,12,16,…, follow these steps:

Determine the common difference d:

The sequence increases by 4 each time (e.g., 8−4=4, 12−8=4).

Use the formula for the n-th term of an arithmetic sequence:

= + (n − 1)d

Where  = 4 and d = 4.

Substitute these values into the formula:

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