Which expression will you find the surface area of this right triangular prism? select all the apply

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4