Answer:
The relationship between B and f is 2f=7b.
Explanation:
Given:
Priya has a recipe for banana bread. She uses 24½ cup of flour to make 7 loaf of bread.
Andre will follow the same recipe, he will make b loaves of bread using f cups of flours.
Now, to find the relationship between b and f.
Priya uses cups of flour = 24½ cup = 49/2 cups.
She uses loaves of bread = 7.
Andre following the same recipe:
He uses loaves of bread = b.
He uses of cups of flour = f.
Now, to find the relationship between b and f we will find the ratio of flour to the loaves of bread in Priya's recipe:

On calculating the fractions:

So, by setting the proportion as Andre is following the same recipe:

Using cross multiplication we get:

Therefore, the relationship between B and f is 2f=7b.