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10 February, 21:17

The equation yˆ=-5.9x2+39x+2.2 approximates the average number of cars that pass through an intersection x hours after 3:00 p. m. What is the best estimate for the average number of cars that pass through the intersection at 4:30 p. m.?

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Answers (2)
  1. 10 February, 21:41
    0
    Answer: 74

    Step-by-step explanation:

    x = 4:30 - 3:00

    = 1:30

    = 1.5 hours

    y = - 5.9x² + 39x + 2.2

    = - 5.9 (1.5) ² + 39 (1.5) + 2.2

    = - 5.9 (2.25) + 58.5 + 2.2

    = 13.275 + 60.7

    = 73.975
  2. 10 February, 21:46
    0
    Answer: 47

    Step-by-step explanation:

    x = 4:30 - 3:00

    = 1:30

    = 1.5 hours

    y = - 5.9x² + 39x + 2.2

    = - 5.9 (1.5) ² + 39 (1.5) + 2.2

    = - 5.9 (2.25) + 58.5 + 2.2

    = - 13.275 + 60.7

    = 47.425
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