Respuesta :

The first one is the answer because he starts with $300 (which would be the b in this case) and he gets $5 for EACH customer (so that would be 5x)
5x + 300 is most appropriate for this question.

Explanation: he gets $5 per bought subscription so the x represents the number of bought subscriptions. he gets an initial pay of $300 so that would be the amount of money he starts with. that’s why the y intercept is 300.

Hope this helps! :)