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2 November, 10:50

Angelica is shopping for a new cell phone plan. she wants a cell phone plan that will cover unlimited calling texting and up to 4gb of data. she finds a plan defined by the function f (x) = 9.99x + 120 where x represents the additional gb of data. $9.99 is the cost of the additional data, $120 is the cost of the cell phone plan up to 4gb and c (x) is the total cost. What is the domain of the function?

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  1. 2 November, 12:40
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    The domain of a function refers to the possible values of x for which the function is valid. In this question, x is the number of additional gb of data, of which Angelica only wants up for 4 gb. Assuming only integers values of gb are acceptable, the domain of the function c (x) is the set {0, 1, 2, 3, 4}.
  2. 2 November, 13:13
    0
    The domain of a function are the possible x values.

    Given the function: f (x) = 9.99x + 120 where x represents the additional gb of data.

    Thus, the domain of the function are the possible additional gb of data which can be represented by numbers from 0 and above.

    Therefore, the domain of the function is the positive real numbers.
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