Answer:
A salmon eating shrimp i think
A car with an initial velocity of 25 m/s speeds up to 40 m/s over a period of 15 seconds. The average acceleration of the car is 1 m/sec/sec. It changed 15 m/sec in 15 seconds.
Answer is: a secretary smokes a cigarette in a crowded break room.
External cost Is when consuming a good or servise imposes a cost to a third party. In this case, smoking affects other people in break room, causing pollution and health related problems.
I would personally choose the lets bake a model