Answer:
C = 50p +900
Step-by-step explanation:
Table: (phones, cost) = (0, 900), (1, 950), (2, 1000).
Equation: C = 900 +50p
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The fixed cost (900) is the "y-intercept" of the equation in slope-intercept form. The cost per phone (50) is the "rate of change" or slope.
The answer is D
4 and 2= 4+2=(4+2)
7 times the sum of 4 and 2
7* (4+2)
Subtract 5 from
7* (4+2)-5
There are four terms: 8x, 6, 2xy, and z because they are being separated by addition or subtraction symbols. Hope this helps.
Determine the slope of AB and DC. These two slopes must equal.
Then determine the slope of AD and BC. These two slopes must also equal.
Remember the slope of the line between two points is (y2 - y1)/(x2 - x1)
The Lagrangian is

It has critical points where the first order derivatives vanish:



From the first two equations we get

Then

At these critical points, we have
(maximum)
(minimum)