D)$40 because you divide 2 and 48 then multiply 10 then you do 20 x 10 then subtract the two answers
Now, there are many types of solids. Hypothesis can be stated as there is a significant discrepancy between solid one from the other sold. Moreover, if the results seems to support the hypothesis then it is somehow reliable and accurate.Thank you for your question. Please don't hesitate to ask in Brainly your queries.
Okay. So, to find the percent change, we have to do change/original. In this case, it would be 12/15, because 15 and 27 are apart by 12. 12/15 is 0.8. Multiply that by 100 and you get 80. There was an 80% markup of the chair sold to the antique dealer.
The question is incomplete. But this explanation will help you very much.
1) Regarding the function

,
its graph always passes through the points (1,0) and (a,1).That is due to the properties of logarithm function:
a)

b)

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That in turn is due to the properties of the exponential functions.
a^0 = 1 and a^1 = a
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2) Regarding the y-axis.
The function

will never touch the y-axis, because the logaritm of zero is not defined. So
the graph lies to the righ of the y-axis (i.e. the domain of the function is x > 0)