The cost of manufacturing a certain type of headphone varies inversely as the number of headphones increase . if 5000 headphones can be manufactured for $15.00 each find the cost to manufacture 7,500 headphones

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

Which representation has a constant of variation of -2.5

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?