The advertising agency counted the number of billboards in each city in the state. Use the data in the stem-and-leaf plot to complete the frequency chart below. Billboards per city Stem Leaf 0 1 4 6 1 9 2 3 0 5 4 0 2 9 5 1 4 8 9 6 4 8 7 1 8 3 3 9 0 1 4 9 10 4 11 5 9 12 13 2 2 14 Fill in the missing numbers. Billboards per city Number of billboardsNumber of cities 1-20 21-403 41-606 61-803 81-1006 101-1203 121-140