You will bike 30.2 miles in the seventh day according to the prediction.
Explanation:
Here we have the following data, You bike
5 miles the first day of your training,
5.4 miles the second day,
6.2 miles the third day, and
7.8 miles the fourth day.
So we can know some facts:
From the first day to the second day the number of miles increases:
From the second day to the third day the number of miles increases:
From the third day to the fourth day the number of miles increases:
By taking a look at the pattern, we can see that each day you increases the number of miles by a factor of 2 compared to the previous day. So:
From the fourth day to the fifth day the number of miles increases:
From the fifth day to the sixth day the number of miles increases:
Finally:
From the sixth day to the seventh day the number of miles increases: