‘F9’ keeps the pedal to the metal over the weekend of July 4 with $ 24million, beating a trio of new challengers

F9: The Fast Saga kept the metal pedal over the weekend of July 4 and retained their pole position at the North American box office, edging out a trio of newcomers that included a sequel to The Boss Baby, the last opus of the Purge franchise, and a buzzing indie based on an epic Twitter …