The correct interpretation of the initial value in the function \( f(x) = -350x + 1400 \) is:
The initial value of 1,400 represents the distance from your starting point to your final destination.
This is because when \( x = 0 \) (the initial day of travel), the function calculates the distance still remaining to the final destination, which is \( f(0) = 1400 \).