Solve the inequality Please be quick I have to finish this within an hour amd I still have other work

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?

F(x)=5/6x+3 which of the following is true

What are the excluded values? m+5/mn+3m