The value of x is 8 when y = 12 if variables x and y have **proportional relationship**.

According to the given question.

Variables y and x have **proportional relationship**.

⇒ y ∝ x

Let k be the constant of proportionality.

⇒ y = kx

Also, it is given that

y = 21 when x = 14

Substitute the value of y = 21 and x = 14 in y = kx to find the value of k.

21 = k(14)

⇒ k = 21/14

⇒ k = 3/2

Therefore, the value of x when y = 12

y = kx

⇒ 12 = (3/2)x

⇒ 12 × 2 = 3x

⇒ 24 = 3x

⇒ x = 24/3

⇒ x = 8

Hence, the value of x is 8 when y = 12.

Find out more information about **proportional relationship** here:

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439.612, 439.261, 439.216, 439.126

**Answer: C**

**Step-by-step explanation: The number go larger in value**

When you move down you subtract and when you move to the right you subtract when your moving up or to the left you add

Add 3n to each side so you get...

9n = 26

Finally, divide by 9 on each side...

9n = 26

_______

9 9

The answer is **n = 2.89999**