Answer:
A. (-2,0)
Step-by-step explanation:
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Answer:
C(x) = 8*x + 8* (1000)/x + 80
C(x) Domain x > 0
Step-by-step explanation:
enclosed area 1000 ft²
let x be side perpendicular to the river
and y parallel to the river
Then:
A = x*y y = A / x y = 1000/x
Cost of one side (x) 4*x $ then two sides cost = 4*2*x cost = 8*x
Cost of one side (y) 8*y $ 8* (1000/x)
Cost of four cornes posts 4*20 = 80 $
Total cost C(x)
C(x) = 8*x + 8* (1000)/x + 80
R { x > 0}
Taking derivatives both sides of the equation
C´(x) = 8 - 8000/x² C´(x) = 0 8 - 8000/x² = 0
8x² -8000 = 0 x² = 1000
x = 100
The domain is all of the possible x values.
The range is all of the possible y values.
When writing the coordinates for a point, we know it should be in this format: (x,y).
Thus we get:
Domain = {-9,4,5}
Range: = {2, 4, 17}
(TIP: do not repeat any values. Only write each number once.)
(TIP: Order the values from least to greatest.)
(x - 5) represents the total charge before applying sales tax.
Answer:
<u><em>note:</em></u>
<u><em>find the attached solution</em></u>