Solve the system using elimination

x + 2y = 1
4x + y = 11

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x, y) ?