n stands for the term number, so just substitute in 1 as n. T(1)=2-7, or -5
T ( n ) = 2 − 7 n f or n = 1 T ( 1 ) = 2 − 7 ∗ 1 T ( 1 ) = 2 − 7 T ( 1 ) = − 5
The 1st term of the function T ( n ) = 2 − 7 n is found by substituting n = 1 into the equation, which gives T ( 1 ) = − 5 . Thus, the 1st term is − 5 .
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