What is the line of symmetry for the parabola whose equation is y = -x^2 + x + 3?

On an airplane there are two seats on the left side and three seats on the right side there are 90 seats o the right side of the plane

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

The first side of a triangle measures 5 in less than the second side, the third side is 3 in more than the first side, and the perimeter is 17 in. how long is the third side? if s represents the length of the second side, which of the following represents the length of the third side? s-5 ws-2 s+ 3 next question ask for turn it in