A commercial real estate company owns six office buildings that it leases to businesses. The lease price per square foot differs by building due to location and building amenities. Currently, all six buildings are fully leased at the prices shown here. Complete parts a and b below. Building Building Building Building Building Building 1 2 3 4 5 6 Price per Square Foot $65 $75 $90 $35 $55 $120 Number of Square Feet 115,000 38,500 77,500 36,000 50,000 140,000 a. Compute the weighted average (mean) price per square foot for these buildings. The weighted mean is $ (Round to the nearest dollar as needed.)