What is the answer to this question use the distributive property to write an equivalent expression 21p+35q?

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?

Select the correct answer and solve for y

Marking brainliest for original answer.. are these two triangles similar? how can you tell?