C.
because a, b, and d aren't porportional
but c x is divided by 2
The function is

.
This means that as we get from 1 to 2, we have the following values:

, and

.
Similarly, if we check x=3, we have

.
We can see that as x changes by 1 (with greater values), y increases by a factor of 12.
Answer: multiply by 12
Answer:
0.706
Step-by-step explanation:
Convert 12/17 to decimal by dividing the numerator by denominator.
12 ÷ 17 = 0.70588.......
The nearest thousandth is the third decimal place.
If we round up: 0.706
If we round down: 0.705
Because the fourth digit is "8", we round up.
If the digit after the one you want to round to is 5 or greater, then you round up. If the digit after is 4 or less, round down..
12 ÷ 17 = 0.70588....... ≈ 0.706