Krysta wants to get a sandwich from the deli for lunch. She can pick a tuna, roast beef, ham, chicken salad, or vegetarian sandwich. The bread choices are rye, wheat, or multi-grain. She can have provolone, cheddar, or American cheese, and she can pick one sauce. The sauce choices are pepper spread, dijon, pesto, mustard, and mayonnaise. How many different combinations can Krysta pick from?

idk

step-by-step explanation:

i don't know

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