glennhardenjr glennhardenjr

03-08-2017
Mathematics

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The equation y = 0.75x + 10 describes the cost, y, of placing an ad with x words in the classified section of a newspaper. How many words are in an ad that costs $25?

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musiclover10045 musiclover10045

03-08-2017

y = cost = $25

25 = 0.75 +10

subtract 10 from each side

15=0.75x

x = 15/0.75 = 20

there were 20 words in the ad

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