Find the zeros for each polynomial function and give the multiplicity for each zero. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each zero. f (z) = z +7x2 - 4x-28 %3D O x-2: has multiplicity 1, and it touches the x-axis. x-2: has multiplicity 1, and it touches the x-axis. x-7: has multiplicity 1, and it touches the x-axis. O x-2: has multiplicity 3, and it crosses the x-axis. x-2: has multiplicity 3, and it crosses the x-axis. x-7: has multiplicity 3, and it crosses the x-axis. O x-2: has multiplicity 1, and it crosses the x-axis. x--2: has multiplicity 1, and it crosses the x-axis. x-7: has multiplicity 1, and it crosses the x-axis. O x-2: has multiplicity 1, and it crosses the x-axis. x--2: has multiplicity 2, and it touches the x-axis. x--7: has multiplicity 2, and it touches the x-axis.