Linear Functions

SAT Math· difficulty 3/5

A pool drains so that V(t)=500080tV(t) = 5000 - 80t gallons remain after tt minutes. Which statement best interprets the slope?

  • A

    The pool drains 80 gallons each minute

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  • B

    The pool starts with 80 gallons

  • C

    After 5000 minutes the pool is empty

  • D

    The pool gains 80 gallons each minute

Explanation

The slope 80-80 means VV decreases by 80 gallons per minute.

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