The per capita growth rate r (on an annual basis) of a population of grazing animals is a function of V, the amount of vegetation available. A positive value of r means that the population is growing, whereas a negative value of r means that the population is declining. For a certain species of kar of Australia, the relationship is given as r- 0.3 - 2e-0.00ev Here Vis the vegetation biomass, measured in pounds per acre. (a) Draw a graph of r versus V. Include vegetation biomass levels up to 1000 pounds per acre. 0.6 0.6 0.4 0.2 0.4 V 1000 200 600 800 0.2 -0.2 -0.4 200 400 600 800 1000 -0.6 -0.2 3000 0.2 2500 200 V 1000 2000 400 600 800 -0.2 1500 -0.4 1000 -0.6 500 -0.8 200 400 600 800 1000 (b) The population size will be stable if the per capita growth is zero. At what vegetation level will the population size be stable? (Round your answer to two decimal places.) Ib/acre

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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Please answer parts (a) and (b).

The per capita growth rate r (on an annual basis) of a population of grazing animals is a function of V, the amount of vegetation available. A positive value of r means that the population is growing, whereas a negative value of r means that the population is declining. For a certain species of kangaroo
of Australia, the relationship is given as
r= 0.3 - 2e-0.008V
Here V is the vegetation biomass, measured in pounds per acre.
(a) Draw a graph of r versus . Include vegetation biomass levels up to 1000 pounds per acre.
r
r
0.6
0.6
0.4
0.2
0.4
400
V
1000
200
600
800
0.2
-0.2
200
400
600
800
1000
-0.4
-0.2
-0.6
3000
0.2
2500
206
V
1000
2000
400
600
800
-0.2
1500
-0.4
1000
-0.6
500
-0.8
V
1000
200
400
600
800
(b) The population size will be stable if the per capita growth is zero. At what vegetation level will the population size be stable? (Round your answer to two decimal places.)
Ib/acre
Transcribed Image Text:The per capita growth rate r (on an annual basis) of a population of grazing animals is a function of V, the amount of vegetation available. A positive value of r means that the population is growing, whereas a negative value of r means that the population is declining. For a certain species of kangaroo of Australia, the relationship is given as r= 0.3 - 2e-0.008V Here V is the vegetation biomass, measured in pounds per acre. (a) Draw a graph of r versus . Include vegetation biomass levels up to 1000 pounds per acre. r r 0.6 0.6 0.4 0.2 0.4 400 V 1000 200 600 800 0.2 -0.2 200 400 600 800 1000 -0.4 -0.2 -0.6 3000 0.2 2500 206 V 1000 2000 400 600 800 -0.2 1500 -0.4 1000 -0.6 500 -0.8 V 1000 200 400 600 800 (b) The population size will be stable if the per capita growth is zero. At what vegetation level will the population size be stable? (Round your answer to two decimal places.) Ib/acre
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