Idon't know how to do these i need asap plz

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.

Me asap! what is the slope of this line? enter your answer in the box.

Which representation has a constant of variation of -2.5