Which expression is equivalent to 7^3 x 7^-5

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Solve the formula ax+ by = c for x.

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