How many ways can you arrange the letters in vacuum?

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.

If g^-1(x) is the inverse of g (x) which statement must be true

Percent increase and decrease. original number: 45 new number: 18