Respuesta :

Answer:

[tex]Sn = \frac{a( {r}^{n - 1}) }{r - 1} \\ 5460 = \frac{4( {4}^{n - 1} )}{3} \\ 4095 = {4}^{(n - 1)} \\ 4095 = \frac{4 {}^{n} }{4} \\ {4}^{n} = 16380 \\ {4}^{n} = {4}^{7} \\ n = 7 \: terms[/tex]