Write “345 ants per 23 square inches” as a unit rate. round to the hundredths place, if necessary. a. 15 ants per square inch b. 345 ants per square inch c. 17.25 ants per square inch d. 7935 ants per square inch

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?