Business The revenues R of the Dell Corporation (in billions of dollars) can be approximat...

Business The revenues R of the Dell Corporation (in billions of dollars) can be approximated by

where x = 2 corresponds to the year 2002.‡

(a) When were revenues about $58 billion dollars?

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(b) If this formula remains valid until 2015, when do revenues reach $67,170,000,000?

‡Based on data from Dell’s Web site.