Gmat question help (part two)

These questions are not very much clear to me. In fact I feel the data provided is not complete because they can be interpreted in different ways.

For example, in the first question it is mentioned that "... the trends for year 1 to year 2 continue to year 3...", which type of trend we are talking about? Take other income for example. It was 180 (in dollars or thousands of dollars, we don't know) in first year, and in 2nd it became 600. Now "the trend" may be interpreted as either of the following ways,

• 1. The other income has been increased by (600 - 180) = 420 from year 1 to year 2. Hence, following the trend, the other income will be (600 + 420) = 1020 in year 3
  2. The other income has become 600/180 = 10/3 times of year 1 in year 2. Hence, following the trend, the other income will be 600*(10/3) = 2000 in year 3