Explain one way to add 3 digit number

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?

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x

Collin did the work to see if 10 is a solution to the equation r/4=2.4