Help plsss! Thanks whoever does!!

5/6+7/8what is the answer sealsdbdbshd

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days