Use a graphing utility to graph the polar equation r = cos 5 + n cos

Use a graphing utility to graph the polar equation r = cos 5θ + n cos θ for 0 ≤ θ < π and for the integers n = - 5 to n = 5. What values of n produce the "heart" portion of the curve? What values of n produce the "bell" portion? (This curve, created by Michael W. Chamberlin, appeared in The College Mathematics Journal.)