Solve each system by graphing. check your solution.

11)y=1/2x+7

17)2x-y=-5
-2x-y=-1

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

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

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?