For my quiz someone please help

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

Use set builder notation to represent the following set: { -3, -2, -1, 0}

Val and tony get paid per project. val is paid a project fee of $44 plus $12 per hour. tony is paid a project fee of $35 plus $15 per hour. write an expression to represent how much a company will pay to hire both to work the same number of hours on a project.