Explain why the expression 2y-y can be written as y

Toyland is having a sale. all items are 20% off. how much will you save on an item that usually sells for 95$ explain your

Graph red beads cost $1 an ounce and gold beads cost $3 an ounce. juanita wants to purchase a 12-ounce mixture of red and gold beads that she can sell for $2 an ounce. the solution of the system shows the number of beads needed for juanita to break even. x + y = 12, x + 3y = 24 how many ounces of red beads will juanita buy to break even? how many ounces of gold beads will she buy?

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?