A couple had a meal at a restaurant and their bill was $35.50. The sales tax was 7%. They left a 20% tip on the pretax (the price before tax is added) for their server.

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

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?

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i