I need some help and where is david/trent and my best friends

Why are True Friends so Hard to Find? As we get older, it is not uncommon to find that making a good friend becomes harder and harder. It turns out that there is a reason for this. Developmental psychologists study the typical sequence of a person's emotional development.

if you need to find a best friend you would have to know the person really well.

Step-by-step explanation:

from experience

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

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!