Tracy's retirement party costs $25 ,plus an additional $1 for each guest she invites. What is the maximum number of guests there can be if Tracy can afford to spend a total of $37 on her retirement party?

12 guest

Step-by-step explanation:

It cost $25, plus an additional $1 per guest. She wants to spend $37 on everything.

Let work this out:

37-25=12

She can invite 12 guest and meet her budget of $37.

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