Acafeteria sells entrees and additional items. an entree costs $4.75, and each additional item costs $1.25. a costumer pays $9.75 for one entree and some additional items. how many additional items were ordered?

Liquids, because they flow, can occupy whatever shape their container has, so they do not have a fixed shape. Because the particles in liquids are very close together (barely further apart than in solids) liquids do not easily compress, so their volume is fixed. ... Gases therefore can be compressed or expanded.