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3.5 Exercise 29

Avg difficulty 2.5

The number of unread emails in Bryan’s account is 100. This number grows by 15 unread emails a day. The function N(t)=100+15tN \left(t\right) = 100 + 15 t represents the relation between the number of emails, N, and the time, t, measured in days.

ⓐ Determine the independent and dependent variable.

ⓑ Find N(7).N \left(7\right) . Explain what this result means.

OpenStax Intermediate Algebra 2e, 3.5 Relations and Functions, exercise 29

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Adapted from Intermediate Algebra 2e © 2020 Rice University. Licensed under CC BY 4.0. Source: Intermediate Algebra 2e. Imported at revision 77a933c.