In total, 2 baseballs and 3 footballs cost $67. A football is $4 more than 3 times the cost of a baseball. Find the cost of a baseball

With number 11 ( show how you got the answer)

Nine people are going to share a 128-ounces bottle of soda. how many ounces will each person get drink? choose the correct equation and answer for this situation

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?