PLEASE HELP I WILL MARK BRAINLIEST 4. The function f(x) = 5x + 8 was replaced with f(x + k) = 5x - 4. What is the value of k?

49xy +34y - 72z. determine the degree of the polynomial

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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?