Question

Find the distance covered by a car in 3x hours is 27x³ + 9x² - 3x Find the rate of the car. Show your solution.

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Answer 1

distance = 27x³ + 9x² - 3x , time = 3x ,

rate =?

`distance = rate * time \\ \\ rate = (distance)/(time) \\ \\ r = (d)/(t) \\ \\ r = \frac{27 {x}^(3) + 9 {x}^(2) - 3x}{3x} \\ \\ r = \frac{3x(9 {x}^(2) + 3x - 1) }{3x} \\ \\ r = 9 {x}^(2) + 3x - 1`

So; The rate of the car equal (9x²+3x-1)