I think you are missing something, what expression?
If you mean the • dot, it means multiplication.
Answer:
B
Step-by-step explanation:
Answer:

Step-by-step explanation:
<u>Step 1: Set x to 4 and set y to -5</u>
<u />


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Answer: 
20% of 106
= 0.20 * 106
= 21.2
21.2 = 10.6% of 21.2 / 0.106
= 200 answer
2. 56 * 0.055 / 0.35
= 8.8
3. 6.4 / 0.8 = 8