Verified Answer :

kimeto3

Sum= n(a₁+an)/2 where a₁ is the first term, and an is the nth term(30th for this)
an= 6n+5
a₁=6(1)+5
   =11
a₃₀=6(30)+5
     =185
Sum= 30(11+185)/2
       =15(196)
       =2940

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