Use Mathematical Induction to Prove the Formula for Every Positive $n$

question 99

Essay

Use mathematical induction to prove the formula for every positive integer $n$ . Show all your work.
$$7 + 10 + 13 + 16 + \ldots + ( 3 n + 4 ) = \frac { n } { 2 } ( 3 n + 11 )$$

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