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Algebra

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Moderate

Birthday Party

ALGEBR-1EY4CL

Elizabeth wants to download music for a birthday party. She wants just enough songs to fill the entire length of the party. The length of the party will be either three or four hours long. Let $m$ = music and $p$ = party length. Identify the independent variable.

A

$m$ = music

B

$p$ = party length

C

Neither