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Linear Functions

SAT Math· difficulty 4/5

A pizza shop's daily profit is P=6n−300P = 6n - 300 where nn is pizzas sold. Minimum pizzas needed for at least \120$ profit:

  • A

    6060

  • B

    9090

  • C

    7070

    check_circle
  • D

    8080

Explanation

6n−300≥120⇒6n≥420⇒n≥706n - 300 \ge 120 \Rightarrow 6n \ge 420 \Rightarrow n \ge 70.

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