Tube rental at totally tubular is 5$ per hour plus an initial deposit of 17$. which expression represents how much it will cost to rent a tube for d number of hours?

Math it's appreciated. (picture provided)

Use complete sentences to differentiate between a regular tessellation, and a pure tessellation. be sure to include specific types of polygons in your explanation.

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?