For a confidence level of 80% with a sample size of 31, find the critical t value.

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Solve -2(4y + 6) = 52. 5 -5 8 -8 and !

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.