Linear Functions

SAT Math· difficulty 3/5

A function gives temperature T=702tT = 70 - 2t where tt is hours after sunset. The temperature drops:

  • A

    22 degrees per hour

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  • B

    6868 degrees per hour

  • C

    22 hours per degree

  • D

    7070 degrees per hour

Explanation

Slope 2-2 means temperature drops 22 degrees per hour.

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