Answer:
equation: y = 3x + 14
number of coins after 30 months: 104 coins
Hope this helps :)
honestly man I say go with c
It would either be 9*(10^3) which would be <em>9000</em>.
Or, it would be (9*10)^3, which equals <em>729000</em>.
Please try and get another answer to make sure!