Question
The fish population at a local lake has been exposed to a dangerous virus. Before the outbreak, there were 310 fish in the lake. Now each week, half of the fish die from the virus. How many fish will remain after 7 weeks?
*
1 point
About 10 fish
About 6 fish
About 2 fish
No fish
*
1 point
About 10 fish
About 6 fish
About 2 fish
No fish
Answers
GPT-4o mini
To determine how many fish will remain after 7 weeks given that half of the fish die each week, we can calculate the fish population week by week.
Starting with 310 fish:
- Week 1: 310 / 2 = 155 fish remain
- Week 2: 155 / 2 = 77.5 fish remain (we will round down to 77)
- Week 3: 77 / 2 = 38.5 fish remain (round down to 38)
- Week 4: 38 / 2 = 19 fish remain
- Week 5: 19 / 2 = 9.5 fish remain (round down to 9)
- Week 6: 9 / 2 = 4.5 fish remain (round down to 4)
- Week 7: 4 / 2 = 2 fish remain
After 7 weeks, there will be approximately 2 fish remaining. Thus, the correct answer is:
About 2 fish.
Starting with 310 fish:
- Week 1: 310 / 2 = 155 fish remain
- Week 2: 155 / 2 = 77.5 fish remain (we will round down to 77)
- Week 3: 77 / 2 = 38.5 fish remain (round down to 38)
- Week 4: 38 / 2 = 19 fish remain
- Week 5: 19 / 2 = 9.5 fish remain (round down to 9)
- Week 6: 9 / 2 = 4.5 fish remain (round down to 4)
- Week 7: 4 / 2 = 2 fish remain
After 7 weeks, there will be approximately 2 fish remaining. Thus, the correct answer is:
About 2 fish.