If f(x) = 8 – 10x and g(x) = 5x + 4, what is the value of (fg)(–2)?

(fg)(x) = -168

Step-by-step explanation:

Since (fg)(x) = f(g)×g(x)

So (fg)(-2) = f(-2)×g(-2)

Since f(x) = 8 - 10x

f(-2) = 8 - 10(-2)

      = 8 + 20

      = 28

and g(x) = 5x + 4

g(-2) = 5(-2) + 4

       = -10 + 4

       = -6

Now f(-2)×g(-2) = 28(-6) = -168

Therefore, (fg)(x) = -168 will be the answer.

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.