The equation y = 7x+25 gives the number of minutes it takes to prepare a meal y given the number of people being served x. which statement is true? a. for every extra minute it takes to prepare a meal, 7 more people can be fed. b. for every extra minute it takes to prepare a meal, 25 more people can be fed. c. for every extra person served, the time it takes to prepare a meal increases by 7 minutes. d. for every extra person served, the time it takes to prepare a meal increases by 25 minutes.