Evaluate
-x^2-4x-4;x=-3
11
-17
3
-1

(-3, -1)

(11, -169)

(-17, -105)

(3, -25)

(-1, -1)

Step-by-step explanation:

-x² - 4x - 4

x = -3

-9 + 12 - 4 = -1

x = 11

-121 - 44 - 4 = - 169

x = -17

-169 + 68 - 4 = -105

x = 3

-9 - 12 - 4 = -25

x = -1

-1 + 4 - 4 = -1

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.