After you rewrite subtraction as addition of the
additive inverse, how can the like terms be
grouped?
o [3a? + (-3a%)] + (-5ab + 8ab) + [b? + (-262)]
o [3a² + (-3a? )] + (-5ab + 8ab) + (62 + 2b2)
0 (3a’ + 3a> ) + (-5ab + (-8ab)] + [b? + (-262)]
o (3a’ + 3a> ) + (-5ab + (-262)] + [b? + (-8ab)]

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