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1 December, 02:18

Jason works at least 5 hours but not more than 10. He earns $15.30 per hour. The function f (t) = 15.3t represents the money he earns for working t hours. What is the practical range? Show all your work.

1. Correctly determine the minimum and maximum money earned.

2. Correctly identify the practical range as inclusive or exclusive.

3. Correctly state the practical range.

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  1. 1 December, 02:30
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    1. The minimum number of hours is 5 hours, so the minimum money earned is:

    minimum money = 15.30 * 5 = $76.50

    The maximum number of hours is 10 hours, so the maximum money earned is:

    maximum money = 15.30 * 10 = $153

    2. Since the words "at least" and "not more than" are used, hence this is inclusive.

    3. The practical range is:

    $76.50 ≤ f (t) ≤ $153
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