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Given that the sequence is gemoetric, you must find R.
R is equal to any given term divided by the term before it.
112/28 = 4
28/7 = 4
This sequence multiplies by 4 every time
I assume yall start at s1 not s0, so simply make an equation that multiplies by 4 every time that s increases
[tex]s(n) = 7*4^{n-1}[/tex]
plug in 8
[tex]s(8) = 7 * 4^{7} \\= 114,688[/tex]