When Marcia started walking a 6 mile section of the trail , it took her 3.3 hours. After 1 week, her time was 3 . 1 hours, and after two weeks, it was 2.9 hours. If the pattern continues what will Marcia time be after two weeks? Help!
2.9 hours.
3.3-2.9= .4
3.3-.4= 2.9
2.9 hours
3.3-4=2.9 or number 2
To find out what Marcia's time will be after two weeks, we need to analyze the pattern and calculate the rate of change.
We know that:
- Marcia initially took 3.3 hours to cover a 6-mile section.
- After 1 week, her time decreased to 3.1 hours.
- After 2 weeks, her time further decreased to 2.9 hours.
From this information, we can observe that Marcia's time is decreasing by 0.2 hours (or 12 minutes) each week. We can use this rate of change to predict her time after two weeks.
If we subtract 0.2 hours from her time after 1 week (3.1 hours), we get:
3.1 - 0.2 = 2.9 hours
Therefore, if the pattern continues, Marcia's time after two weeks will be 2.9 hours.