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.?

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

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step-by-step explanation:

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