What is the smallest angle of rotational symmetry that maps a regular nonagon (9 sides) onto itself?

°

The table respent two linear functions the equation respented by the first tables is given

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.

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.