Marissa means 8 gallons of lemonade for every 60 guests that come to her party. if she's inviting 25 guests, how many gallons of lemonade does she need?

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.