Someone help me please I’m exhausted & struggling

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Ithink i know it but i want to be sure so can you me out ?

Someone answer this asap for the first five terms of a sequence are shown. 5, 11, 23, 47, 95, . . which recursive function defines the nth term in the sequence for n > 1? a. f(n) = f(n - 1) + 6 b) f(n) = f(n - 1) + 48 c) f(n) = 3 • f(n - 1) + 1 d) f(n) = 3 • f(n - 1) - 4