Final answer:
By multiplying 12 anchovies per day by 7 days in a week, we find that the seagull ate a total of 84 anchovies in one week.
Step-by-step explanation:
The seagull ate 12 anchovies every day for one week. To find out the total number of anchovies the seagull ate over the week, you need to multiply the number of anchovies eaten in a day by the number of days in the week.
The calculation would be:
12 anchovies/day × 7 days/week = 84 anchovies/week
Therefore, the seagull ate a total of 84 anchovies in one week.