Multi-step Function Inverses (Level 1)

For the function f(x)=9 (x-8), find f^-1 (x)

Option 1

Step-by-step explanation:

y = 9(x - 8)

Make x the subject

y/9 + 8 = x

Interswitch variables

f^-1(x) = x/9 + 8

i used to know how to do this in 7th but i forget easily

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.