Given that
Martin is planning to collect new songs on his iTunes. The number of songs in Martin’s iTunes collection is modeled by N(m) = 200 + 15m, where m is the number of months
Explanation -
Since something is being added to the number 200 it means that the 200 is the number of songs he already had.
So the correct option is B.
And the final answer is Martin currently owns 200 songs in his iTunes collection.