You poll your classmates at the beginning of the school year and learn that 25 of their families recycle at home. You lead a Save- the-Planet campaign throughout September and then take a second poll in October. This time 3 additional families have started to recycle. What is the percent change in the number of families who recycle at home from September to October?

-6 is the correct option from the above given options

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m