- elastic: when a change in price causes a much larger change in quantity demanded
- inelastic: when a change in price causes a small change in quantity demanded
- unit elastic: when the % change in quantity demanded = the % change in price
- technical مفيد: useful
- revenue المال الحقيقي: total income from a given source or product
- expenditures: things you pay for
- inverse عكس: opposite; the other way
- delayed تاخر: pushed back in time
- hardship مشكله: a problem
- adequate كافي: so-so, alright (a grade of C)