Hi my name is q tip and I got feet

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

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?