Heather has $125 in her bank account during week #1. at the end of each week, she deposits $25 into her bank account. what is the iterative rule for the amount of money heather has after n weeks?

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