Someone please help me out. Im giving brainliest!

Write a recursive sequence that represents the sequence defined by the following explicit formula:

21/2 divided by 3 1/3 = s divided by 4 1/4 . what is s?

Situation: an archaelogist in turkey discovers a spear head that contains 54% of its original amount of c-14. n = noekt no = inital amount of c-14 (at time t = 0) n = amount of c-14 at time t k = 0.0001 t = time, in years find the age of the spear head to the nearest year