The bagel need to be dilated by a scale factor of 25 so as to serve 25 people.
A dilation is the increase or decrease in the size of a figure by a scale factor of k. If k > 1, it is an increase and if k < 1, it is a decrease.
Given that the bagel can serve 1 person each, to serve 25 people:
Scale factor = 25 / 1 = 25
The bagel need to be dilated by a scale factor of 25 so as to serve 25 people.
Find out more on dilation at: https://brainly.com/question/10253650