Answer: There are 875 fans the bus deliver to the concert in total.
Explanation:
Since we have given that
On the first trip, the bus dropped off = 30
Here a = first term = 30
On the 14 trip, the last trip, the bus dropped off = 95
i.e.

So, the total number of fans the bus deliver to the concert is given by

Hence, there are 875 fans the bus deliver to the concert in total.