What is the greatest common factor of 54z^3 and 18z and 36z^2

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.

The tile along the edge of a triangular community pool needs to be replaced? ?

F(x)=3(1.54)^x whats this how do you do it