Adding two functions results in h(x) = –x + 9, while multiplying the same functions results in j(x) = –9x. which statements describe f(x) and g(x), the original functions? select two options. both functions must be quadratic. both functions must have a constant rate of change. both functions must have a y-intercept of 0. the rate of change of either f(x) or g(x) must be 0. the y-intercepts of f(x) and g(x) must be opposites.

I think it is A and B. Tell me if im wrong

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.