Answer: I think c but im not too sure
Step-by-step explanation;
We have the following expression

This is equivalent to

Since

we have that

Therefore, the answer is the second option from top to bottom.
Answer:
0.5 liter = 500000 cubic millimeters
Answer:
The mean depends on the no. of family members but the question hasn't mentioned it. So I have no idea what to do with this.
Answer: 70
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