Please answer this question please :)

B

Step-by-step explanation:

A linear equation has the highest degree of 1.

In other words, there is only one x, and this x is to the first power.

Graphically, linear equations are lines.

Hence, the correct answer is B.

A is incorrect because it is the reciprocal of x, which is a rational function.

C and D are incorrect because the highest degree is 2, making them quadratics.

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.