Final answer:
Jacques can increase the lavender scent of his potpourri by altering the ratio of lavender oil to rose petals from that of Tina's mixture. He could increase the amount of lavender oil or reduce the amount of rose petals to achieve the stronger scent he desires.
Step-by-step explanation:
The subject of the question is Mathematics, specifically dealing with ratios and proportions. Jacques is looking to create a potpourri with a stronger lavender scent than Tina's mixture. Tina's potpourri uses a ratio of 15 drops of lavender oil to every 3 cups of rose petals. To have a stronger lavender scent, Jacques needs to increase the ratio of lavender oil to rose petals. This could be done in several ways, including increasing the number of drops of lavender oil while keeping the rose petals constant, decreasing the number of rose petals while keeping the number of lavender oil drops constant, or increasing the lavender oil more substantially than the rose petals.
Let's assume Jacques decides to keep the same amount of rose petals. For a stronger scent, he could use a ratio such as 20 drops of lavender oil to 3 cups of rose petals, which is a higher ratio of oil to petals than Tina's. Conversely, if he decides to use a fixed amount of lavender oil, he could reduce the amount of rose petals to create a more concentrated scent, such as 15 drops of lavender oil to 2 cups of rose petals.
It's important to note that these are just examples, and the actual amount Jacques should use would depend on his personal preference for how strong he wants the scent to be. He can adjust the ratio accordingly to achieve his desired potency.