The given data is
x f(x)
---- --------
12 0
20 800
30 1800
where
x = number of clients per month
f(x) = monthly revenue
A graph of the data is shown below.
Let the equation of the line be
y = mx + c
The x-intercept is 12, therefore
12m + c = 0 (1)
The line passes through (30, 1800) and (12,0). Therefore the slope is
m = 1800/(30-12) = 100 (2)
From (1), obtain
c = -12m = -12*100 = -1200
Therefore
y = 100x - 1200
Answer: D. f(x) = 100x - 1200
The product of given polynomials is: 
Step-by-step explanation:
Given polynomials are:

In order to multiply both polynomials, we will use the distributive property
So,

Combining like terms

Hence,
The product of given polynomials is: 
Keywords: Polynomials, variables
Learn more about polynomials at:
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Here is the solution for the given problem above.
First we need to get the 12% of $19. So 19 x 0.12 and we get 2.28. So in order to get the price of the DVD last week, let us add the 2.28 to 19, and we get a total of 21.28. So the final answer would be: $21.28 is the price of the DVD last week. Hope this answers the question. Thanks for posting your question.
Answer:
Step-by-step explanation:
a) 0.5*0.365=18.25%
b) (100%-20,7%-50%)=29.3