Back to Use function notation — Problem 1 · Task Set 3

HSF.IF.A.2 Tutor Intake — Evaluate and Interpret Function Notation

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Grade 9·13 problems·~15 min·Common Core Math - HS Functions·group·hsf-if-a-2

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Concepts

A city pool opens each morning. Let $S(t)$ represent the number of swimmers
in the pool $t$ hours after opening.

Which statement correctly interprets $S(4) = 72$ ?

When there are 72 swimmers, the pool has been open for 4 hours.

Four hours after the pool opens, there are 72 swimmers.

$S$ equals 72 when $t$ equals 4.

The pool has 4 swimmers after 72 hours.