Respuesta :

meowymeowylee
a(n) = -3 * 2^(n-1)

first term, you substitute 1 into n
-3 * 2^(1-1)
-3 * 2^0
-3 * 1= -3

fourth term, you substitute 4 into n
-3 * 2^(4-1)
-3 * 2^3
-3 * 8 = -24

eighth term, you substitute 8 into n
-3 * 2^(8-1)
-3 * 2^7
-3 * 128 = -384


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