What is the solution set for the equation the square root of x + 14 subtracled by the square root of 2x+5 = 1

Find the domain of the following expression: 1/(√x)-2

Which system of linear inequalities is represented by the graph?

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.