Daisies cost $3 each and lilies cost $7 each. marissa spends $21 on flowers to brighten up the room. write an equation it standard form to represent the situation

Which best explains why this triangle is or is not a right triangle?

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?

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?