Find a formula for the general term a_n of the sequence, assuming that the pattern of the first few terms continues. (Assume that n begins with 1.) {-4, 8/3, -16/9, 32/27, -64/81, ...} a. 4(2/3)^{n-1} b. -4(2/3)^{n-1} c. -4(-2/3)^{n-1} d. 2(-4/3)^{n-1} e. -4(-1/3)^{n-1}
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