Help please need this answer quickly!!

Multiplying an even number of negative numbers gives an answer that is choose from:

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?