2-Bromopropane Reactivity: Substitution vs. Elimination

Consider the following reaction of 2-bromopropane with a nucleophile in a polar solvent:

2-bromopropane (C₃H₇Br) reacts to form either propene (C₃H₆) through elimination or a substitution product by displacing the bromide ion. Analyze the reaction conditions and the structure of 2-bromopropane to determine which type of mechanism predominantly occurs, along with the expected product if the reaction proceeds via a nucleophilic substitution pathway.

In particular, consider whether the reaction conditions favor an S_N1, S_N2, E₁, or E₂ mechanism. Which product is the major product formed when 2-bromopropane is treated with a strong nucleophile in a protic solvent?