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13-07-2020
Mathematics

contestada

The equation yˆ=−6.2x2+41.5x−5.6 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 5:30 p.m.?

Respuesta :

jimrgrant1 jimrgrant1

13-07-2020

Answer:

59

Step-by-step explanation:

5: 30 pm is 2.5 hours after 3 : 00 pm

Substitute x = 2.5 into the equation

y = - 6.2(2.5)² + 41.5(2.5) - 5.6

= - 38.75 + 103.75 - 5.6

= 59.4

The average number of cars is 59

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