What is the best name of the line?

Acylinder has volume 45π and radius 3. what is it’s height?

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?