6 + (10 - 4)2 - 20 = 6 + 12 - 20 = 18 - 20 = -2
Assuming that the two in the middle of the expression is multiplied by (10 - x) the answer would be -2. I apologize if I did not read your question right.
It's a linear function with y-intercept = 12.
The slope-intercept form:

Let's read the coordinates of two points on the graph:
(2, 15) and (4, 18)
Substitute to the formula of a slope:

We have the equation of a line:

We need calculate the value of function for x = 1 and x = 20.
Substitute:


$12 is the "Fixed Fee", therefore the discounted entrance fee to the art museum is

The total cost is $42.00 after 20 visits.
<h3>Answer D.</h3>
Answer:
5b+n=100,6+10n=15 that's all
The answer is D 156 weeks