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To solve this all it takes is two simple steps
Simplify

1/2x =22
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Multiply both sides by 2
2 ·

= 2 · 22
x = 44
I believe the answer is the second answer
B) because if you round your numbers, -18 1/4 is -18 and 2 2/3 rounds up to positive 3
He wrote the number 1892, because:
The number needs to be less than 2000, with four digits. Because the first is half the last, it means that the number must be 1??2.
These two numbers add up to 3, and all together, they need to add to 20. 20-3=17. The remaining numbers need to add to 17.
The only two single digit numbers that can add to 17, are 8 and 9. Therefore, the number must either be 1892 or 1982.
The second digit needs to be even, meaning that the number has to be 1892.
I hope this helps.
Answer:
C) I and II
There is a gap in the Potato Chips group for the stem "14" and the Tortilla Chips group for the stem "12"