Question is below
v v v v v v v

it is 15 water glasses for every 2 juices.

Step-by-step explanation:

so for the visual learners out there

= 15 water cups.

^^ = 2 juice cups

so

= 180 waater cups

15*12=180

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ =water and jucie cups

30 juice cups

for every group of 15 you have a group of two.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

3x + 4y -25 =0 represents the amount of change sianna should recieve