The amount G, in pounds, of grass a kangaroo will eat in a day depends on the amount V, in pounds per acre, of vegetation present. The relationship is given by
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A: Make a graph of G versus V. Include vegetation levels up to 2,000 pounds per acre.B: What vegetation level will cause a kangaroo to consume 2.1 pounds in a day?C: Is the graph concave up or concave down? Explain in practical terms what this means about how the kangaroo feeds.D: What is the most a kangaroo will eat in a day no matter how much vegetation is present?
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Round your answer to two decimal places if necessary.
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What will be an ideal response?
A:
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B: 621.23 pounds per acre
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C: The graph is concave down. As vegetation levels increase the amount the kangaroo eats increases, but at a decreasing rate. Additional availability of vegetation makes a greater difference in the amount the kangaroo eats when there is less vegetation present.
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D: About 2.5 pounds
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Calculate the flux of the field F across the closed plane curve C.F = (x+y)i + xyj; the curve C is the closed counterclockwise path around the rectangle with vertices at 
and 
A. 133 B. 21 C. 84 D. 140
Subtract. Simplify the result whenever possible.
x - 
x
A. 
x
B. 
x2
C. 
x
D. 
x
Convert the units using unit fractions.20 yd = 
ft
A. 240 B. 720 C. 60 D. 180
Find an equation for the ellipse described.Center (0, 0); major axis vertical with length 8; length of minor axis is 6
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1