Mathematical Problem Solving
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Questions and Answers

Which of the following functions represents the helicopter's altitude above the ground, y, in feet, t seconds after the helicopter begins to gain altitude?

  • C) y = 40 - 21t
  • B) y = 40 + 21t (correct)
  • D) y = 40t + 21
  • A) y = 40 + 21

    • Which of the following graphs represents the cost, y, of sending x texts in a month for a text messaging plan?

  • D) y 5 x O 100
  • A) O y x 5 100 (correct)
  • C) O y x 5 100
  • B) O y x 5 100

    • What is the initial altitude of the helicopter?

  • B) 21 feet
  • C) 61 feet
  • A) 40 feet (correct)
  • D) 0 feet

    • What is the rate at which the helicopter is gaining altitude?

    <p>B) 21 feet per second</p> Signup and view all the answers

    What is the cost of sending 150 texts in a month for the text messaging plan?

    <p>D) $37.50</p> Signup and view all the answers

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