The function f(x) represents the amount charged by gardner A for x hours of work, and g(x) represents the amount charged by gardener B for x hours of wok. x f(x) g(x)
2100220
4200 280
6300 340
8400400
10500460

For how many hours of work will the gardeners charge the same amount, and how much will they charge?

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.