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Clive has a phone plan where he pays double his base per minute rate for any additional minute spent on a call over twenty minutes.


Determine and define the variables needed to model the situation

Sagot :

Facundo3141592idn

The two variables that we should use are:

  • x = number of minutes that the call lasted.
  • y = cost of that call.

What variables should we use?

Here we want to study a relation between the cost per call as the function of the minutes that the call lasted.

So, we need to use two variables, x will be the number of minutes that call lasted, this is the independent variable.

And the variable that depends on that should be the cost of the call, let's say, y is the cost of the call.

These are the two variables that we need to model the situation:

y = f(x)

There says:

"The cost of the call is a function of the number of minutes that the call lasted".

If you want to learn more about functions, you can read:

https://brainly.com/question/4025726

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