1. Switch to the Consolidated worksheet. Consolidate the revenue data from each of the offices as follows:
   1. In cell A4, enter a formula without using a function that references cell A4 in the Washington worksheet. Copy the formula from cell A4 to the range A5:A7.
   2. In cell B4, enter a formula using the SUM function, 3-D references, and grouped worksheets that totals the values from cell B4 in the California:Washington worksheets.
   3. Copy the formula from cell B4 to the range B5:B7 without copying the formatting.
   4. Copy the formulas and the formatting from the range B4:B7 to the range C4:F7.