Simplify each expression and evaluate it for x=3 13 . 3(2x+6)−(3x+1) The simplified expression is : The value of the expression for the given x is :

Simplified expression; 3x + 17

The value of the function for the given value of x is 26

Step-by-step explanation:

Restructured

Simplify each expression and evaluate it for x=3, 3(2x+6)−(3x+1) The simplified expression is : The value of the expression for the given x is :

Given the expression;

3(2x+6) - (3x-1)

On simplification:

= 3(2x) + 3(6) -3x + 1

= 6x + 18 - 3x + 1

= 6x - 3x + 18-1

= 3x + 17

If x = 3

f(3) = 3(3) + 17

f(3) = 9 + 17

f(3) = 26

Note the question was re-structured since the given question was not too clear

17

step-by-step explanation:

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.