The answer is- C. 10 minus 4
Answer:

Step-by-step explanation:
When it comes to exponential expressions and logarithms, the following relationship applies:

Here, it means ...

Answer:
$3.50 per pound
Step-by-step explanation:
Divide 42 by 12 or 31.5 by 9 and you get 3.5. In money, that is $3.50
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