Y=-x+4x+2y=-8 how many solutions does this linear system have

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Find the domain of the following expression: 1/(√x)-2

Which rule describes the composition of transformations that maps ajkl to aj"k"l"? ro. 900 o to, -2(x, y) to, -20 ro, 900(x, y) ro, 9000 t-2. o(x,y) t-2, 00 ro, 900(x, y)