I don't know the answer, and I would like some help as fast as possible, please

Graph B

Step-by-step explanation:

See attachment.

To shift vertically down by 3, add -3 to f(x).  f(x) = x^3 - 3

Graph B matches this behavior.

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

explanation:

remove parenthesis:

=

apply rule

=

multiply fractions:

=

=

divide:

=

mordancy.