XMark.com is a major Internet company specializing in organic food. XMark.com is thinking of purchasing GoodGrow, another organic food Internet company. GoodGrow has current revenues of $100 million with expenses of $150 million. Current projections indicate that GoodGrow's revenues are increasing at 35 percent per year and its expenses are increasing by 10 percent per year. XMark.com understands that projections can be erroneous, however; the company must determine the number of years before GoodGrow will return a profit