Cayden has several screws on a scale, and the scale reads 80.955g. Cayden adds 1 more screw, and the scale reads 84.81g.
What is the mass of the last screw Cayden adds?

Jermaine has t subway tokens. karen has 4 more subway tokens than jermaine. raul has 5 fewer subway tokens than jermaine. which expression represents the ratio of karen's tokens to raul's tokens

I’m stuck on this equation, anyone got the answer?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0