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A social networking site recorded that 80% of the people who became members of the...

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Basic Math

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A social networking site recorded that 80% of the people who became members of the site one month were between 30 and 40 years old. The equation below represents this information, where x represents the total number of people who became members of the site that month:x=0.8x + 72How many people who became members of the site that month were between 30 and 40 years of age? a. 112b. 288c. 360d. 432

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