Answer
300
Explanation
At first Freya started with 200 yards.
Then she gradually increased her distance by adding 5 yards a day for 2 days.
The formula for the model is given by;
X=200+(n-1)5. Where X=the distance she sprint on day 21
X=200+(21-1)5
X=200+ (20)5=300 yards
There is no set number of "lines" of longitude. You're free
to draw as few or as many 'lines' to mark the 360 degrees
of longitude on the Earth's surface.
However many lines you decide to draw on your map or globe,
they ALL cross the equator.
1. Vegetation 2. Glaciers 3. Earthquake 4. Crust 5.