Answer:
The constant of proportionality is 0.45.
Step-by-step explanation:
The constant of proportionality is the ration of two different quantities or is the unit value of a quantity.
The expression representing the price of bananas is:
[tex]p=0.45n[/tex]
To determine the unit rate of bananas divide the price by the number of bananas.
[tex]\text{Unit Rate}=\frac{p}{n}[/tex]
[tex]=\frac{0.45n}{n}\\\\=0.45[/tex]
Thus, the constant of proportionality is 0.45.