OpenStax, Intermediate Algebra 2e §3.5 Relations and Functions · Try It 11 · Algebra · Graphs

Relations and Functions · Try It 11

The number of unread emails in Bryan’s account is 100. This number grows by 15 unread emails a day. The function $N (t) = 100 + 15 t$ represents the relation between the number of emails, N, and the time, t, measured in days.
ⓐ Determine the independent and dependent variable.
ⓑ Find $N (7) .$ Explain what this result means.

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OpenStax, Intermediate Algebra 2e · §3.5 Relations and Functions · Try It 11

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