Alright, lets get started.
At the beginning of her training, she is able to run 2 miles without stopping means 2 will be in the addition when we will write the equation for her running miles.
Her goal is to increase her distance by three quarters of a mile each week.
Means in first week, she will add the distance =
miles
Suppose she runs x weeks, so shee will add distance = 
So, suppose she runs total number of miles = d, then

Where d is total numer of miles she runs
x is number of weeks : Answer
Hope it will help :)
Hi!
Your answer is Infinite.
Here's why:
When you solve this system of equations your final answer will come down to x=x.
When this happens you know that the solution amount is infinite!
I hope this helps!
Feel free to give brainliest of you think this answer deserves it!