a) Let

b) If Carrie and Miranda buy phones at the same time, Carrie buying the Cyborg and Miranda buying the MyPhone, when will their phones have the same value? * If you get a decimal answer, please round your answer to the next whole month (round up).*

c) After how many months are each of the phones worth nothing? * If you get a decimal answer, please round your answer to the next whole month (round up).*

The MyPhone is worth nothing after

The Cyborg is worth nothing after