The price yesterday was $120 today it is $54 what is the percentage decrease.

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.