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Under his cell phone plan, Brayden pays a flat cost of $66. 50 per month and $4 per gigabyte, or part of a gigabyte. (For example, if he used 2. 3 gigabytes, he would have to pay for 3 whole gigabytes. ) He wants to keep his bill under $85 per month. What is the maximum whole number of gigabytes of data he can use while staying within his budget?



Answer :

In linear equation, 4  is the maximum whole number of gigabytes of data he can use while staying within his budget.

What are a definition and an example of a linear equation?

  • An equation with only one variable is referred to as a linear equation in one variable.
  • It has the mathematical formula Ax + B = 0, where A and B can be any two real numbers, and x is an unknowable variable with just one possible value.
  • A linear equation in one variable would be 9x + 78 = 18, for instance.

Let the number of gigabyte so f data she can use while staying within her budget then,

we can write the cost equation as following

 4x + 66.50 ) ≤ 85

   85 - 66.50 ≤ 4x

   18.5 ≤ 4x

   x ≤ 18.5/4

   x ≤ 4. 625

   Xmax =  4

Learn more about  linear equation

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