饼图和条形图显示了在特定一周内销售的不同类型鲜花的数量。刻度上未显示销售的鲜花数量。 在上面的条形图中，画出代表该周内售出的康乃馨支数的条形。

1. Determine the fraction of the pie chart for Roses and Orchids.

The sectors for Roses and Orchids are both $90^\circ$, which is a quarter of the pie chart.
Fraction for Roses = $\frac{90}{360} = \frac{1}{4}$
Fraction for Orchids = $\frac{90}{360} = \frac{1}{4}$

2. Determine the fraction of the pie chart for Carnations.

Fraction for Carnations = $1 - \frac{1}{4} - \frac{1}{4} - \frac{1}{8} = 1 - \frac{2}{8} - \frac{2}{8} - \frac{1}{8} = \frac{3}{8}$

3. Relate the fractions to the bar graph heights.

From the bar graph, Sunflowers ($\frac{1}{8}$ of the total) correspond to 3 grid intervals.
Carnations represent $\frac{3}{8}$ of the total, which is $3 \times \frac{1}{8}$.
Therefore, the height of the bar for Carnations should be $3 \times 3 = 9$ grid intervals.