1. Region IV – OBJ 1 8.1 B Mrs. Smith’s classroom can hold at the most 30 students. Her first period class had a ratio of 4 boys for every 3 girls. When 3 boys and 1 girl were added to the class, the new ratio became 3 boys to 2 girls. How many total students are now in the class? Justify your answer.

2. 8.1B Four schools from Midtown, Texas wanted to rent the city’s Special Events Center to display their student’s artwork. 150 students from Brookside High School, 150 students from Mountainview High School, 125 students from Lakeside High School and some students from Ridgecrest High School participated in the art exhibit. A total of 500 students participated in the art exhibit. Based on the information above, what percent of the Special Events Center should be assigned to each school if the space is assigned proportionally? Justify your answer.

3. 8.1 C A stained glass window that your dad will be installing at one of the local department stores is shown below. The eight congruent triangles form a square window that is 2 feet by 2 feet. The lines represent the metal that is placed to hold the glass pieces together. How many feet of metal will be needed to make this window? Justify your answer.