Nick opens a bank account with $50. Each week after, he deposits $15. In how many weeks will he saved $500? * 1 point a) 50+ 15x =500, x= 30 weeks B) 35x- 15x= 500 , x= 25 C) 50x + 15 = 500, x= 9.7 weeks D) 15-50x = 500 , x= -9.7 weeks