Given:
The price of bananas can be determined by the equation P=0.25n, where P is the price and n is the number of bananas.
To find:
The constant of proportionality
Solution:
We have,
...(i)
where P is the price and n is the number of bananas.
Price P is directly proportional to the number of bananas. So,

...(ii)
Where, k is the constant of proportionality.
On comparing (i) and (ii), we get

Therefore, the constant of proportionality is 0.25.
Answer:

Step-by-step explanation:
see the picture attached for further explanation.
A the rent all together is

b the rent alltogether would be

the rent for c would cost
640 including everything
and the rent for d would be

so the answer would be D
hope this helped sorry for late answer
The y intercept is when x=0 so y=1/2(0) -3 so y=0-3 so y=-3