The correct interpretation of the initial value in the cost function \( C(x) = 2.83x + 1,350 \) is:
The initial value of 1,350 represents the fixed cost.
In this cost function, the fixed cost is the amount that must be paid regardless of the number of umbrellas produced, which is represented by the constant term \( 1,350 \). The term \( 2.83x \) represents the variable cost, which depends on the number of umbrellas produced (x).