Final answer:
To find out how many fluid ounces are in 3.5 cups, you need to set up a proportion and solve for x. The answer is 28 fluid ounces.
Step-by-step explanation:
To convert cups to fluid ounces, you can use the information on the label that Keisha read. According to the label, 16 fluid ounces is the same as 2 cups. To find out how many fluid ounces are in 3.5 cups, you need to set up a proportion.
Proportion:
\frac{16\,\text{fl oz}}{2\,\text{cups}} = \frac{x\,\text{fl oz}}{3.5\,\text{cups}}
Now, cross-multiply and solve for x:
2x = 16 \times 3.5
2x = 56
x = \frac{56}{2} = 28
Therefore, there are 28 fluid ounces in 3.5 cups.