To calculate the retention rate, how many total customers did Becky have by the end of Q1 if she started with 225 and gained 35 new customers?

To determine the total number of customers Becky had by the end of Q1, you start with the number of customers she originally had and then add any new customers she gained during that period.

Becky initially had 225 customers. By gaining 35 new customers, you would perform an addition:

225 (original customers) + 35 (new customers) = 260 total customers by the end of Q1.

The correct answer reflects this calculation. The other options do not match this total or derive from incorrect calculations, making them irrelevant in this context. Thus, option B represents the accurate total number of customers Becky had at the end of Q1.