1. In a class of 180 eigth-grade students, 80% went to the Science Museum. Ninety percent of the boys and 90 girls went on this trip. How many girls are in the eighth-grade class?
2. The endpoints of a diagonal of a rectangle are (-4, -5) and (3, 4), and the sides of the rectangle are parallel to the axes. How many square units zre in the area of the rectangle?
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