Bj's game store buys video games for $30. they charge the customers $50 for the games. what is the percent markup?

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?