Solve for x. x + 1 3 4 = 2 7 8

Yeah, Kinda tired to answer this so If someone could help me out :)

Whats the name of the vertical axis

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0