On the hike down a mountain, Erica descends at a rate of 36 feet each hour. What is her change in elevation afte 3 hours?

Erica has gone 108 feet down the mountain.

Step-by-step explanation:

This is because you would multiply 36 by 3 and you get 108.

Every 5 minutes the amount of bacteria would double. So five minutes would allow for the bacteria to fill one bottle since you already have one filled then the next five minutes it doubled again and since u have two bottles doubling two would mean you filled the last two bottles