Use the given function and the given interval to complete parts a and b. f (x )f(x)equals=2 x cubed minus 27 x squared plus 84 x2x3−27x2+84x on [1 comma 8 ][1,8] a. Determine the absolute extreme values of f on the given interval when they exist. b. Use a graphing utility to confirm your conclusions.

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step-by-step explanation: ; )

i wish i could u

step-by-step explanation:

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54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.