What is the solution to the system x+3y+z=8 , 3x+2y-2z=5 , 4x-3t+kz=0

The area of a 25-inch tv screen is 300 square inches. the area of a 40-inch tv screen is 768 square inches. the are of the smaller screen is what percent of the area of the larger screen?

Which is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]

The parabola opens: y=√x-4 (principal square root) up down right left