Find the experimental probability

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.

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

What percent of 18 is 24? and plz explain thx.