Please help me The graph of the function f(x) = 3x^3 + 5x^2 – 3x – 15 is shown below. Choose the best
description of the roots.

One real root and two non-real roots

Three real roots

Three non-real roots

Two real root and once non-real roots

sorry i need the points

step-by-step explanation:

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1. minimum

2. 6400

3. eight

hope this !

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.