Which pair of quantities form a proportional relationship? Select all that apply. o į and
o 1 and
30
and
90
and
135
and
16
and
36

idk

step-by-step explanation:

i would say b) is your answer

sorry if im wrong

step-by-step explanation:

1.30

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15