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Solve is in the picture 

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dalendrk
It's an arithmetic sequence.

[tex]a_1=-121;\ a_2=-108;\ a_3=-95;\ a_4=-82\\\\a_n=a_1+(n-1)r\\\\r=a_{n+1}-a_n\\\\r=-108-(-121)=-108+121=13\\\\a_n=-121+(n-1)\cdot13=-121+13n-13=13n-134\\\\a_{29}=13\cdot29-134=243\\\\Answer:\boxed{a_{29}=243}[/tex]

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