Matt has 4 red balloons,3 green ones,2 yellow ones.what fraction of his balloons are red?

4/9

Step-by-step explanation:

There are

4+3+2 = 9 balloons

The fraction that are red = red balloons/ total balloons

fraction red = 4 red/9 total

4/9

Model is the required word.

Step-by-step explanation:

Given : A function which is used to represent a problem, and which can be used to solve the problem.

We have to find : The given situation is called?

Solution :

A function which is used to represent a problem gives you a model .

As model is the representation of a problem which is used to solve a problem.

So, according to hint also the required word is model.

A function which is used to represent a problem, and which can be used to solve the problem, is called a model.  

Example: If a company produces x units of an item at a cost of $35 apiece, the function C = 35x is a model of the total production cost.