Find the sum of the first 200 terms of the arithmetic sequence:

4,7,10,13,...

60500

Step-by-step explanation:

The sum to n terms of an arithmetic sequence is

= [ 2a₁ + (n - 1)d ]

where a₁ is the first term and d the common difference

Here a₁ = 4 and d = 7 - 4 = 3, thus

= [ (2 × 4) + (199 × 3) ]

      = 100(8 + 597)

      = 100 × 605

      = 60500

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step-by-step explanation: