In a professional support environment, a team lead uses the function $N(t) = 75 + 10t$ to track the growth of unread client emails in a shared inbox, where $t$ is the number of days. Match each part of the mathematical function with the specific business metric it represents.

A department manager uses the function $N(t) = 75 + 10t$ to track the growth of unread support tickets in a shared dashboard, where $t$ represents the number of days. According to the provided model, which expression correctly shows the substitution step required to find the total number of unread tickets after ${}5$ days?

A department lead uses the function $N(t) = 75 + 10t$ to track unread emails in a shared inbox, where $t$ is the number of days. According to the example provided, the total number of unread emails in the account after 5 days is ____.

In the function $N(t) = 75 + 10t$, which models the growth of unread emails in a shared inbox over $t$ days, the variable $N$ is considered the dependent variable because its value relies on the number of days passed.

A team coordinator uses the function $N(t) = 75 + 10t$ to project the growth of unread messages in a department inbox. Based on the evaluation process demonstrated in the model, arrange the following steps in the correct order to calculate the total number of unread messages after ${}5$ days.