Question

1-determine whether the function / is one-to- one:

Answer 1

Answer:

$f(t)$ is a function but not one-to-one.

Step-by-step explanation:

Please refer to my Answer from this Question to know how to Determine whether a Relation is a Function or not: brainly.com/question/24760829

This is a function because time can only move forward and there can't be different numbers of people, $f(t)$, at the same time, $t$. The only thing that is possible is we can have the same number of people, $f(t)$, at the different times, $t$. So, this isn't one-to-one but many-to-one.