Question

How do you write algebraic expressions to model quantities?

Answer 1

Let's say you are walking down the street and you see a lemonade stand. One of the workers tell you that if you buy a lemonade you will have to buy 5 times that amount to sit down and a lemonade cost $2. you order 2 lemonades. after grabbing your drink you feel like sitting down. so you go up to the stand and and attempt to purchase a seat.
5($2x2)=x
(THIS IS JUST AN EXAMPLE) 

Answer 2

Algebraic expressions to model quantities

 A businessman produces x Biscuits made up of wheat and rice daily, and another Business person produces y Snacks made up of vegetables daily.There is another person  who manufactures z , drinks daily.Find total number of Biscuit,snack and Drink produced after 8 days.

So, Algebraic Expression will be

   =8 x+8y+8z

As, there are three terms,so we call it Trinomial Expression.