Which expression will equal a rational product even though it is multiplying an irrational number times another irrational number?

StartRoot 11 EndRoot times StartRoot 11 EndRoot
4.7813265 ellipsis times StartRoot 5 EndRoot
Pi times 3.785492 ellipsis
StartRoot 21 EndRoot times pi

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

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?

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle