What does it mean to be a unit of account? A. Any item that maintains its worth over time.
B. Any item that can be traded for another item.
C. It serves as a valid currency.
D. The item is divisible and each unit is worth the same.
SUBMIT

250

step-by-step explanation:

my acc plz

step-by-step explanation:

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