Explanation Given information: There is an annual need of 34,800 kg of newsprint to meet the need of 1,000 people. The amount of newsprint by a newspaper and the number of people in the area served by that paper vary directly. Formula used: When a quantity P is directly proportional to another quantity T , if the value of one quantity increases, then, the value of the other quantity also increases. P = k T Calculation: Consider that the annual need of 34,800 kg of newsprint to meet the need of 1,000 people. Let the amount of newsprint by a newspaper to be N and the number of people in the area served by that paper to be S and the constant of proportionality to be k . It is provided that the amount of newsprint by a newspaper and the number of people in the area served by that paper vary directly. Apply the formula for direct proportionality, N = k S Now substitute the values as, 34800 = k × 1000 k = 34800 1000 = 34

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ISBN: 9781259218859

Author: David Sobecki Professor, Brian A. Mercer

Publisher: McGraw-Hill Education

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Chapter 4.5, Problem 2A

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To calculate: The equation to relate the amount of newsprint by a newspaper and the number of people in the area served by that paper, when they vary directly, and the number of kilograms needed to supply Columbus, Ohio, with a population of about 720,000.

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The equation to relate the amount of newsprint by a newspaper and the number of people in the area served by that paper, when they vary directly, and the number of kilograms needed to supply Columbus, Ohio, with a population of about 720,000.

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To calculate: The equation to relate the amount of newsprint by a newspaper and the number of people in the area served by that paper, when they vary directly, and the number of kilograms needed to supply Columbus, Ohio, with a population of about 720,000.

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